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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ito; Yutaka
Address:
Takahagi, JP
No. of patents:
38
Patents:












Patent Number Title Of Patent Date Issued
6966630 Inkjet head November 22, 2005
An inkjet recording head characterized by better ink repellency, greater resistance to abrasion and a longer service life than a conventional product can be attained when an ink repellent layer comprising a compound made up of a perfluoropolyether chain and alkoxysilane residue is formed
6917495 Magnetic disk drive July 12, 2005
A magnetic disk drive having a magnetic disk, a spindle motor for rotating the magnetic disk, a magnetic head slider for recording or reproducing data onto or from the magnetic disk and a housing. A control circuit system is provided for controlling the head slider so that the head slide
6869536 Lubricant, magnetic disk and magnetic disk apparatus March 22, 2005
A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by
6835350 Flat cell and an analyzer using the same December 28, 2004
A measurement cell for analyzer for carrying out qualitative and/or quantitative analysis for one or more substances by an optical means, which is planar and has sample-holding portions, the contact angle between said sample-holding portion and water being 30.degree. or less, and the
6816341 Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group November 9, 2004
A recording element or a reproducing element in a head generates heat that decomposes lubricating agent adhered to a slider surface near the recording/reproducing element of the head. This decomposed lubricating agent leads to corrosion of the magnetic layer and the like of the magne
6764654 Flat cell and an analyzer using the same July 20, 2004
A measurement cell for analyzer for carrying out qualitative and/or quantitative analysis for one or more substances by an optical means, which is planar and has sample-holding portions, the contact angle between said sample-holding portion and water being 30.degree. or less, and the
6665147 Magnetic disk drive with supply of perfluoropolyether as lubricant December 16, 2003
A magnetic disk drive having a small decrease in lubricant film thickness on the surface of the magnetic disk and a superior sliding reliability between the magnetic head and the magnetic disk surface. Perfluoropolyether is supplied as the lubricant onto the surface of the magnetic d
6632780 Highly thermal conductive grease composition and cooling device using the same October 14, 2003
There are provided a highly thermal conductive grease composition having both a thermal conductivity and a satisfactory dispense property, and a cooling device applied with same. The grease composition comprises from 70 to 90% by volume of an inorganic powder which is a mixture containin
6555197 Lubricant, magnetic disk and magnetic disk apparatus April 29, 2003
A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by
6543360 Printing plate and printer using it April 8, 2003
A printing system is provided which ensures easy formation of a plate and regeneration of the plate for continued use. The press plate used in a the printing system to form an image using a water-based ink is characterized in that, (I) prior to formation of a latent image, the surface fo
6443375 Fuel injection valve coated with anti-fouling perfluoropolyether film layer and associated metho September 3, 2002
A fuel injection valve for a direct gasoline injection engine, a direct injection engine, and an automobile using the same. The fuel injection valve can prevent the deposits produced during combustion of gasoline from accumulating on the surface of the fuel injection valve, or easily rem
6431473 Fuel injection valve coated with anti-fouling perfluoropolyether film layer and associated metho August 13, 2002
The invention provides for a fuel injection valve for a direct gasoline injection engine, a direct injection engine and an automobile using the same, which can prevent the deposits produced during combustion of gasoline from accumulating on the surface of the fuel injection valve, or
6329023 Process for producing a magnetic head slider December 11, 2001
A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50.degree. or more when measured by using a lubricant coated on the magnetic disk, is free from start failure
6323163 Fluorocompound, lubricant, surface modifier, lubricating film, magnetic recording medium, and ma November 27, 2001
The present invention is a fluorine-containing compound having i) a perfluoropolyoxyalkyl or -alkylene chain having an average molecular weight of 800 or more and ii) a cyclic or non-cyclic polyether atomic group. Its use as a low-scattering lubricant or surface modifier (water repel
6296917 Magnetic disk and magnetic recording/reproduction apparatus October 2, 2001
A lubricating film is provided for a magnetic disk having a data region and a CSS region formed on its surface. The lubricating film ensures low stiction and good resistance to contact sliding in the data region and also ensures good CSS durability in the CSS region. Therefore, it is
6273348 Fuel injection valve and direct injection engine using the same August 14, 2001
The invention provides for a fuel injection valve for a direct gasoline injection engine, a direct injection engine and an automobile using the same, which can prevent the deposits produced during combustion of gasoline from accumulating on the surface of the fuel injection valve, or
6249403 Magnetic hard disk drive and process for producing the same June 19, 2001
A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50.degree. or more when measured by using a lubricant coated on the magnetic disk, is free from start failure
6176094 Refrigerating machine oil composition, and refrigeration and compressor using the refrigerating January 23, 2001
The present invention relates to a refrigerating machine oil composition, which is composed of a base oil as a main component containing a single component of a compound or a mixture of compounds selected from the group consisting of cyclic carbonates and aliphatic carbonate derivatives.
6087072 Article having a light-controllable super-water-repellent surface and a printing machine using t July 11, 2000
The present invention relates to an article with a surface having an contact angle with water of at least 150.degree. or more in which the contact angle with water on the surface is lowered to less than 150.degree. by photo-irradiation to the surface. According to the present inventi
6068911 Super water-repellent coating material, and super water-repellent coating film using the same May 30, 2000
A super water-repellent coating film is formed of a super water-repellent coating material comprising an organic coating material composed of organic polymer, a filler mixture composed of plural kinds of fillers of at least 5 nm in average particle diameter, which is dispersed in the
6027852 Article having a light-controllable super-water-repellent surface and a printing machine using t February 22, 2000
The present invention relates to an article with a surface having an contact angle with water of at least 150.degree. or more in which the contact angle with water on the surface is lowered to less than 150.degree. by photo-irradiation to the surface. According to the present inventi
5985403 Magnetic recording medium and magnetic recording reproducer November 16, 1999
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer and a protective layer which are formed on the non-magnetic substrate in that order, wherein a substance(s) as a single component or a plurality of components, which constitute a liquid continuously supp
5830834 Ammonium carboxylate type fluorine-containing compound, solid surface modifier containing the sa November 3, 1998
A magnetic recording medium is produced by coating a body having (a) a non-magnetic substrate, (b) at least one magnetic substance layer formed on the non-magnetic substrate and (c) at least one protective layer formed on the magnetic substance layer which contains at least one member
5820964 Magnetic disk, and magnetic disk apparatus October 13, 1998
The present invention is aimed at providing a magnetic disk and a magnetic disk apparatus both of which have a high performance lubricating film which makes continuous sliding endurance and low adhesiveness compatible, and a lubricating film having a self repairing function which makes i
5561659 Optical information recording medium October 1, 1996
An optical information recording medium comprising a substrate and formed thereon an information recording layer comprising at least two organic dyes having different chemical structures and continuous playback ability of 10.sup.5 times or more at a playback laser power of 0.5 to 1.5 mW,
5549835 Apparatus equipped with a cooling block unit having sliding parts and a compound used to the sam August 27, 1996
Disclosed are an apparatus having sliding parts and a compound for preventing diffusion or separation of a base oil; and a compound for preventing diffusion or separation of the base oil used for the apparatus: an electronic or electric appliance using a joul heat generating source,
5536578 Magnetic recording medium comprising a protective layer and a layer of ammonium carboxylate fluo July 16, 1996
A magnetic recording medium is produced by coating a body having (a) a non-magnetic substrate, (b) at least one magnetic substance layer formed on the non-magnetic substrate and (c) at least one protective layer formed on the magnetic substance layer which contains at least one member
5456980 Ammonium carboxylate lubricant and magnetic recording medium using the same October 10, 1995
A lubricant comprising a multifunctional ammonium carboxylate represented by the general formula (1) and a magnetic recording medium comprising a non-magnetic support having a magnetic layer thereon, on the top of which a protective film is formed, wherein the lubricant is coated on the
5346633 Method for surface treatment of a body, surface treatment agent, surface treated body, surface t September 13, 1994
Object of the present invention is to provide an apparatus in which water, oil or grease are maintained on an ordinary using surface in a stable condition by preventing the water, the oil or the grease from moving to other surface than the ordinary using surface.The present invention rel
5281512 Optical information recording medium January 25, 1994
An optical information recording medium comprising a substrate and formed thereon an information recording layer comprising at least two organic dyes having different chemical structures and continuous playback ability of 10.sup.5 times or more at a playback laser power of 0.5 to 1.5 mW,
5252418 Electrophotographic photoreceptor with protruding inorganic insulator pieces and an electrophoto October 12, 1993
An electrophotographic photoreceptor comprising a photoconductive layer comprising a photoconductor, a support for the photoconductive layer and a surface layer formed on the photoconductive layer and comprising a curable resin film and an inorganic insulator pieces having a size larger
5223342 Magnetic recording medium having a lubricating layer comprising a binder and specified perfluoro June 29, 1993
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon group is excellent in durability and exhibits good l
5219651 Magnetic recording apparatus comprising a magnetic recording medium and a magnetic head each coa June 15, 1993
A magnetic recording medium which comprises a non-magnetic substrate, a thin film magnetic layer formed on the surface of the substrate and an organic thin film protective layer formed on the magnetic layer, the organic thin film protective layer having a thickness of not more than 100
5204202 Electrophotographic photosensitive element comprising a protective layer with a porous surface i April 20, 1993
An electrophotographic photosensitive element, e.g. for a photocopier or laser printer, comprises a substrate and a plurality of layers on the substrate including a photoconductive layer of a-Si:H and a protective and lubricating layer which is outermost from said substrate. To provide w
5157066 Fluoroalkyl ether, surface modifying composition and method for modifying surface October 20, 1992
A solid surface modifying composition comprising a film forming material and a fluoroalkyl ether ((Rf).sub.m (CONH--X--NHCO--Y).sub.m (m=1 or 2; Rf: perfluoropolyether chain; X: ##STR1## etc.; ##STR2## etc.) provides surfaces with such improvements as durable water and oil
5128435 Magnetic recording medium based on epoxy resins modified by isocyanates with poly(perfluoroether July 7, 1992
A resin composition comprising an epoxy resin and an isocyanate group-containing fluorine compound is particularly suitable for covering a magnetic recording medium comprising a non-magnetic substrate and formed thereon a thin magnetic film so as to give excellent sliding durability.
5073466 Electrophotographic member containing a fluorine-containing lubricating agent and process for pr December 17, 1991
An electrophotographic member comprising a support, a photoconductive layer formed thereon, and a surface layer formed thereon, said surface layer including or attaching a lubricating agent having a perfluoropolyoxyalkyl or perfluoropolyoxyalkylene group to form an organic surface protec
5071715 Magnetic recording medium with a lubricant layer containing a perfluoro polyoxyalkyl compound December 10, 1991
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon containing group is excellent in durability and exhi










 
 
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