Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Material Science
Class Information
Number: 521/131
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water > Ingredient contains only carbon and hydrogen atoms, only c and halogen atoms, or only c, h, and halogen atoms
Description: Subject matter wherein the stated ingredient contains (1) only carbon and hydrogen atoms, or (2) only carbon, hydrogen, and halogen atoms, or (3) only carbon and halogen atoms.










Sub-classes under this class:

Class Number Class Name Patents
521/132 Said ingredient is substantially nonvolatile material, e.g., hydrocarbon waxes, greases, etc. 110


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
5939463 High productivity, low fugitive VOC emission foam process Aug. 17, 1999
5925612 Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 1,1-dichloro-1-fluoroethane Jul. 20, 1999
5922779 Polyol blends for producing hydrocarbon-blown polyurethane and polyisocyanurate foams Jul. 13, 1999
5912279 Polymer foams containing blocking agents Jun. 15, 1999
5900320 Foamed plastic and method of manufacturing the same May. 4, 1999
5895793 Fluorine-containing hydrocarbon composition Apr. 20, 1999
5895792 Production of rigid polyurethane foams Apr. 20, 1999
5889286 Premixes for the preparation of polyurethane or polyisocyanurate foams Mar. 30, 1999
5889067 Open cell rigid polyurethane foam and method for producing the same and method for making vacuum insulation panel using same Mar. 30, 1999
5889066 Rigid foams with improved insulation properties and a process for the production of such foams Mar. 30, 1999
5886062 Process for the production of rigid polyurethane foams Mar. 23, 1999
5883146 Dimensionally stable closed cell rigid polyisocyanate based foam prepared from a froth foaming mixture Mar. 16, 1999
5883142 Silicone surfactants for rigid polyurethane foam made with third generation blowing agents Mar. 16, 1999
5880168 Open-celled rigid foams based on isocyanate Mar. 9, 1999
5869546 Mixtures leading to hard polyurethane foamed materials Feb. 9, 1999
5866626 Method of producing rigid foams and products produced therefrom Feb. 2, 1999
5866029 Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and pentane Feb. 2, 1999
5859078 Polyurethane foam Jan. 12, 1999
5856679 Premixes for the preparation of polyurethane foams Jan. 5, 1999
5854296 Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and tetramethylsilane Dec. 29, 1998
5854295 Microcellular foams containing an infrared attenuating agent and a method of using Dec. 29, 1998
5849807 HCFC-141b blown foams with low levels of HCFC-1131a by-products Dec. 15, 1998
5847018 Method of producing rigid foams and products produced therefrom Dec. 8, 1998
5840779 Catalysts which stabilize hydrohalocarbon blowing agent in polyurethane foam formulations Nov. 24, 1998
5840212 Rigid foams with improved insulation properties and a process for the production of such foams Nov. 24, 1998
5840781 Polyether polyols, polyol formulation containing them and their use in the production of hard polyurethane foams Nov. 24, 1998
5837742 Method of making a polyurethane foam having improved flame retardance and aged k-factors Nov. 17, 1998
5837741 Composite microporous carbons for fuel gas storage Nov. 17, 1998
5827446 Nonafluoromethoxybutane compositions Oct. 27, 1998
5824400 Plastic article and process for the preparation thereof Oct. 20, 1998
5801209 EPDM compositions and process for producing same Sep. 1, 1998
5800729 Mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms Sep. 1, 1998
5798009 Foamed rubber compositions for tires and pneumatic tire using the same Aug. 25, 1998
5789458 Method for producing foams from high acid polyester polyols Aug. 4, 1998
5789456 Manufacture of non-CFC cellular resol foams using perfluorinated ethers Aug. 4, 1998
5788877 Substantially constant boiling compositions of difluoromethane and trifluoroethane Aug. 4, 1998
5789455 Fluorine-containing hydrocarbon composition Aug. 4, 1998
5786398 Manufacture of insulating foams containing film forming additives Jul. 28, 1998
5786400 Process for the production of a rigid polyurethane foam and a composition for the production of a rigid polyurethane foam Jul. 28, 1998
5786401 Method for producing a thermal insulating foamed material Jul. 28, 1998
5776992 Halogen-free, flame retardant rigid polyurethane foam Jul. 7, 1998
5776991 Foamed rubber compositions for pneumatic tires and method of producing the same Jul. 7, 1998
5762822 Dimensionally stable closed cell rigid polyisocyanate based foam prepared from a froth foaming mixture Jun. 9, 1998
5762818 Compositions which include 1,1,2,2- tetrafluoroethane and fluoroethane Jun. 9, 1998
5759986 Decafluoropentane compositions Jun. 2, 1998
5759438 Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 1,1-dichloro-1-fluoroethane Jun. 2, 1998
5750586 Production of CFC-free polyurethane rigid foams having a reduced thermal conductivity and their use May. 12, 1998
5741825 Thermal insulating foamed material and method for manfacturing the same Apr. 21, 1998
5739221 Suspension-polymerization process for producing expandable styrene resin beads Apr. 14, 1998
5736588 Process for preparing rigid polyurethane foams Apr. 7, 1998

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16










 
 
  Recently Added Patents
Unified recovery
Visual indicator of online backup
Data processor and scanner device
Personal IP toll-free number
Communication system
Method of transmitting and receiving a paging message in a mobile communication system
Optical navigation device with image sensor and inner housing
  Randomly Featured Patents
Bi-ventricular cardiac assist device
Method of determining dew point and a suitable device
Combined ceiling fan and light with balloon decoration
Communication system, communication method, information recording medium, and program
Thermometer movement cap nut assembly
Boric acid based clove and sugar insecticide
Modular circuit boxes and associated components
Optical recording material
Ablation catheter with segmented tip
Loud-speaker