Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process and apparatus for cutting and sealing multiple plies of thermoplastic material having thickened sections

Process and apparatus for cutting and sealing multiple plies of thermoplastic material having thickened sections

US Patent 4812192 · Granted Mar 14, 1989

Estimated economic value: $5,007,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Dispensing device for multi-pack cans2003
Heating and humidifying respiratory mask1999
Heating and humidifying respiratory mask1996
Apparatus for inert atmosphere sealing1991
Process and apparatus for reducing color contamination in the process recycle of1991
Gussetted plastic bags having relief seals and method of making same1991
Gussetted plastic bags having relief seals and method of making same1991
Film tension compensation device for bag making machine1990
Stand-up plastic bag and method of making same1990
Method for severing and sealing thermoplastic materials1990
Gussetted plastic bags having relief seals and method of making same1990
Gussetted plastic bags having relief seals and method of making same1990