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Class Information
Number: 521/915
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Utilizing electrical or wave energy during cell forming process
Description: Subject matter involving preparing a cellular product under the influence of electrical or wave energy.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7214724 |
Method for cross-linking a foamable plastic |
May. 8, 2007 |
| 6967221 |
Hollow filler-containing silicone rubber and method of production |
Nov. 22, 2005 |
| 6759080 |
Process for making foams by photopolymerization of emulsions |
Jul. 6, 2004 |
| 6573305 |
Foams made by photopolymerization of emulsions |
Jun. 3, 2003 |
| 5874042 |
Foam plastic and method of manufacturing the same |
Feb. 23, 1999 |
| 5795518 |
Process for producing sealing rings from expandable graphite |
Aug. 18, 1998 |
| 5725733 |
Process for producing foam bodies containing cellulose-containing mixtures and foam bodies produced therefrom |
Mar. 10, 1998 |
| 5705535 |
Method for the subcritical drying of aerogels |
Jan. 6, 1998 |
| 5656675 |
Automotive molded roof material and process for producing the same |
Aug. 12, 1997 |
| 5338765 |
Method of and apparatus for continuously foaming a polyimide powder |
Aug. 16, 1994 |
| 5216038 |
Process for producing plastic foam |
Jun. 1, 1993 |
| 5110842 |
Electron-beam cured sheet-type foam |
May. 5, 1992 |
| 5075344 |
Process for producing a superabsorbent polymer |
Dec. 24, 1991 |
| 5061736 |
Foamable silicone rubber composition |
Oct. 29, 1991 |
| 5041466 |
Method for the preparation of foamed and cured silicone rubber body |
Aug. 20, 1991 |
| 4990539 |
Preparation of styrene polymer foam particles |
Feb. 5, 1991 |
| 4980384 |
Foamable silicone rubber composition and method for curing the same |
Dec. 25, 1990 |
| 4944902 |
Polyimide compositions and processes |
Jul. 31, 1990 |
| 4912141 |
Fibrous and cartilaginous tissue replacement |
Mar. 27, 1990 |
| 4902511 |
Fibrous and cartilaginous tissue replacement |
Feb. 20, 1990 |
| 4900762 |
Production of foamed polymer structures |
Feb. 13, 1990 |
| 4897432 |
Production of foamed polymer structures |
Jan. 30, 1990 |
| 4877563 |
Production of foamed polymer structures |
Oct. 31, 1989 |
| 4855331 |
Production of foamed polymer structures |
Aug. 8, 1989 |
| 4822537 |
Production of foamed polymer structures |
Apr. 18, 1989 |
| 4804504 |
Production of foamed polymer structures |
Feb. 14, 1989 |
| 4765934 |
Polystyrene bead expansion process |
Aug. 23, 1988 |
| 4766159 |
Process for producing polypropylene foam |
Aug. 23, 1988 |
| 4740530 |
Method for foaming synthetic resin bodies with microwave or high frequency energy |
Apr. 26, 1988 |
| 4737526 |
Expandable fluorine-contained polymer compositions and foams of fluorine-contained polymer obtained from the compositions |
Apr. 12, 1988 |
| 4614753 |
Light-resistant and weather-proof polyolefin foams |
Sep. 30, 1986 |
| 4590221 |
Method for the preparation of light-resistant and weather-proof polyolefin foams |
May. 20, 1986 |
| 4578231 |
Process for the production of polyolefin foams |
Mar. 25, 1986 |
| 4519963 |
Electroconductive cross-linked polyolefin foam and method for manufacture thereof |
May. 28, 1985 |
| 4510031 |
Heat-foamable olefinic resin composition and process for production of olefinic resin foam from said composition |
Apr. 9, 1985 |
| 4499036 |
Microwave curing of latex-based compositions |
Feb. 12, 1985 |
| RE31696 |
Composition for producing article simulating plantation crepe rubber |
Oct. 2, 1984 |
| 4456706 |
Molding compounds, sponge articles produced therefrom and process of production |
Jun. 26, 1984 |
| 4446254 |
Crosslinked polyolefin foam containing a high concentration of an inorganic material and process for producing the same |
May. 1, 1984 |
| 4439381 |
Methods of preparing polyimides and artifacts composed thereof |
Mar. 27, 1984 |
| 4434251 |
Cross-linked polyvinyl chloride resin foam and method of manufacturing the same |
Feb. 28, 1984 |
| 4433068 |
Process for producing bonded macroballoon structures and resulting product |
Feb. 21, 1984 |
| 4421867 |
Composition for a crosslinked polyolefin foam |
Dec. 20, 1983 |
| 4391765 |
Microwave cured silicone elastomeric foam |
Jul. 5, 1983 |
| 4352892 |
Method for the manufacture of lightweight foam materials from crystalline thermoplastic materials and the resultant products |
Oct. 5, 1982 |
| 4334971 |
Manufacture of resilient foams based on a melamine-formaldehyde condensate |
Jun. 15, 1982 |
| 4314036 |
Unsaturated polyester resin foams and products containing the same |
Feb. 2, 1982 |
| 4306034 |
Composition for producing article simulating plantation crepe rubber |
Dec. 15, 1981 |
| 4305796 |
Methods of preparing polyimides and artifacts composed thereof |
Dec. 15, 1981 |
| 4242465 |
Fire resistant foam insulation |
Dec. 30, 1980 |
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