Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of extruding a polystyrene foam using both a physical blowing agent and water

Method of extruding a polystyrene foam using both a physical blowing agent and water

US Patent 4455272 · Granted Jun 19, 1984

Estimated economic value: $15,691,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Insulated foam board systems and methods of producing the same2003
Processes of forming an insulated foam board system2003
Methods for using a foam condensation board system2000
Foamed core-reclaim multi layer sheet having improved resistance to barrier film1995
Method of producing a thermoplastic foam sheet1994
Method of molding a styrenic foam by extrusion1994
Method for producing a foamed core-reclaim multi-layer sheet1993
Method for production of styrenic foam1992
Foamed core-reclaim multi-layer sheet and process for production thereof1992
Styrenic foam blowing agent composition1990
Heating of a foam cup to increase stiffness1989
Heating of a foam cup to increase stiffness1989