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Ronald J. Tabar Patents
Inventor:
Tabar; Ronald J.
Address:
St. Paul, MN
No. of patents:
15
Patents:




Patent Number Title Of Patent Date Issued
6934082 Optical devices using reflecting polarizing materials August 23, 2005
Optical devices using reflective polarizers and, in particular, diffusely reflective polarizers are provided. Many of the optical devices utilize the diffusely reflecting and specularly transmitting properties of diffusely reflecting polarizers to enhance their optical characteristics.
6829071 Optical devices using reflecting polarizing materials December 7, 2004
Optical devices using reflective polarizers and, in particular, diffusely reflective polarizers are provided. Many of the optical devices utilize the diffusely reflecting and specularly transmitting properties of diffusely reflecting polarizers to enhance their optical characteristics.
6673275 Method for making optical devices from homopolymers January 6, 2004
An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a
6654170 Optical device having continuous and disperse phases November 25, 2003
An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a
6627300 Optical device containing polymeric material domains having different degrees of randomness September 30, 2003
An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a
6329046 Optical film and process for manufacture thereof December 11, 2001
Optical films and processes for forming the optical films are described in which materials having different properties are used and the different properties are exploited to obtain improved optical and/or mechanical properties of the optical film. The different properties of the material
6274221 Angular brightness microprismatic retroreflective film or sheeting incorporating a syndiotactic August 14, 2001
A novel microprismatic retroreflective film or sheeting is provided which comprises a transparent semicrystalline polymer. The microprismatic retroreflective film or sheeting of the present invention offers superior retroreflective brightness at large angles of incidence and at large
6179948 Optical film and process for manufacture thereof January 30, 2001
Optical films and processes for forming the optical films are described in which materials having different properties are used and the different properties are exploited to obtain improved optical and/or mechanical properties of the optical film. The different properties of the material
5591530 Flexible optically uniform sign face substrate January 7, 1997
Flexible optically uniform sign face substrate comprising at least one layer of durable thermoplastic sheeting and an optically uniform dimensionally stable scrim film, and more particularly a sign face substrate comprising at least one layer of optically uniform dimensionally stable
5422189 Flexible optically uniform sign face substrate June 6, 1995
Flexible optically uniform sign face substrate comprising at least one layer of durable thermoplastic sheeting and an optically uniform dimensionally stable scrim film, and more particularly a sign face substrate comprising at least one layer of optically uniform dimensionally stable
4419480 Soft, fatigue resistant elastomer articles December 6, 1983
A soft, fatigue resistant vulcanizate adapted for transmitting load between moving mechanical parts comprising (a) 100 parts by weight of crosslinked elastomer, (b) a fatigue life enhancing amount of substantially internally saturated, substantially linear polymer that (i) is made from m
4362840 Soft, heat and fatigue resistant elastomeric articles December 7, 1982
A soft, heat and fatigue resistant vulcanizate adapted for transmitting load between moving mechanical parts comprising (a) 100 parts by weight of crosslinked elastomer consisting essentially of (i) natural or synthetic polyisoprene rubber, and (ii) elastomeric polybutadiene made from mo
4269746 Compounding polychloroprene rubber May 26, 1981
Polychloroprene compounded with large particle, high structure carbon black and finely divided silica especially when combined with certain curants and plasticizer yields, upon curing, articles which exhibit high tear resistance and low compression set and are admirably suited for high
4267086 Sacraficial binders for molding particulate solids May 12, 1981
Improvements in molded articles from sinterable particulate solids, improvements in method for making such articles, and novel sacrificial binders for use in making such articles are disclosed. The sacrificial binders used in this invention comprise block polymers having the structur
4158688 Sacrificial binders for molding particulate solids and the molding thereof June 19, 1979
Improvements in molded articles from sinterable particulate solids, improvements in method for making such articles, and novel sacrificial binders for use in making such articles are disclosed. The sacrificial binders used in this invention comprise block polymers having the structur


 
 
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