US2720004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of curing a polyester resin in a rubber mold
Assignee: CALVIN WHITE H
•
Filing: 1950-10-16
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Granted: 1955-10-11
•
Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Ellis H Phreaner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:09
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/38; B29C33/40; B29C33/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF FORMING AND CURING A THERMALLY SETTING POLYESTER RESINOUS PLASTIC COMPOSITION THE CURING OF WHICH IS INHIBITED IN THE PRESENCE OF RUBBER ANTI-OXIDANTS, THAT INCLUDES CONTACTING A HEATED BODY OF SAID PLASTIC COMPOSITION DURING ITS CURING WITH A MOLDING MATERIAL COMPRISING A VULCANIZED RUBBER OF THE CLASS CONSISTING OF POLYCHLOROPRENE, BUTADIENE-ACRYLONITRILE COPOLYMERS, BUTADIENE-STYRENE COPOLYMERS AND CHLORINATED COPOLYMERS OF BUTADIENE AND ACRYLONITRILE, SAID VULCANIZED RUBBER CONTAINING AN OXIDIZING AGENT UNIFORMLY DISTRIBUTED WITHIN THE RUBBER AND IMPARTING OXIDIZING PROPERTIES TO SAID MATERIAL AT THE MOLD-PLASTIC COMPOSITION INTERFACE.
Claim 2
Independent Claim
87 words
THE METHOD OF FORMING AND CURING A THERMALLY SETTING POLYESTER RESINOUS PLASTIC COMPOSITION THE CURING OF WHICH IS INHIBITED IN THE PRESENCE OF RUBBER ANTI-OXIDANTS, THAT INCLUDES CONTACTING A HEATED BODY OF SAID PLASTIC COMPOSITION DURING ITS CURING WITH A MOLDING MATERIAL COMPRISING A VULCANIZED RUBBER OF THE CLASS CONSISTING OF POLYCHLOROPRENE, BUTADIENE-ACRYLONITRILE COPOLYMERS, BUTADIENE-STYRENE COPOLYMERS AND CHLORINATED COPOLYMERS OF BUTADIENE AND ACRYLONITRILE, SAID VULCANIZED RUBBER CONTAINING AN OXIDIZING AGENT UNIFORMLY DISTRIBUTED WITHIN THE RUBBER AND IMPARTING OXIDIZING PROPERTIES TO SAID MATERIAL AT THE MOLD-PLASTIC COMPOSITION INTERFACE.
References Cited (Backward Citations)
US1956965A
Cited
GB474242A
Cited
US2454457A
Cited
US2470772A
Cited
GB627560A
Cited
US2478165A
Cited
US2586211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |