Patent US3235636A successfully refreshed from Google Patents.
US3235636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding teflon
Assignee: Champlain Cable Corp
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Filing: 1963-08-27
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Granted: 1966-02-15
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Expires: 1983-08-27
Abstract
No abstract record available.
Inventors
- 👤 David C Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:47
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29C35/00; B29C35/02; B29C35/0227; B29C35/0233; B29C41/00; B29C41/02; B29C41/16; B29K; B29K2027/00; B29K2027/12; B29K2027/14; B29K2027/16; B29K2027/18; B29K2105/00; B29K2105/0058; B29K2105/0064; B29K2105/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A PROCESS OF MOLDING A SHAPED ARTICLE FROM A POLYMERIC HALOHYDROCARBON MEMBER OF THE GORUP CONSISTING OF POLYTETRAFLUOROETHYLENE, POLYMONOCHLOROTRIFLUOROETHYLENE, POLYVINYL FLUORIDE, POLYVINYLIDENE FLUORIDE, POLYHEXAFLUOROPROPENE, COPOLYMERS OF TETRAFLUOROETHYLENE WITH A MEMBER OF THE GROUP CONSITING OF HEXAFLUOROPROPENE, VINYL FLUORIDE AND VINYLIDENE FLUORIDE AND A COPOLYMER OF HEXAFLUOROPROPENE WITH VINYL FLUORIDE AND VINYLIDENE FLUORIDE AND A COPOLYMER OF HEXAFLUOROPROPENE WITH VINYL FLUORIDE COMPRISING PLACING IN A POROUS MOLD A SLURRY OF THE POLYMERIC HALOHYDROCARBON IN A LIQUID DISPERSANT INERT TO AND CAPABLE OF WETTING THE POLYMERIC HALOHYDROCARBON AND VAPORIZABLE AT A TEMPERATURE BELOW THE FUSION POINT OF THE POLYMERIC HALOHYDROCARBON, APPLYING A PRESSURE DIFFERENTIAL BETWEEN ONE SIDE OF THE MOLD AND THE OTHER TO CONFORM THE POLYMERIC HALOHYDROCARBON TO THE MOLD, PLACING THE MOLD CONTAINING THE CONFORMED HALOHYDROCARBON IN A HYDROCLAVE, APPLYING A PRESSURE OF AT LEAST 1,000 P.S.I. IN THE HYDROCLAVE TO COMPACT THE POLYMERIC HALOHYDROCARBON AND THEREAFTER HEATING THE MOLD CONTAINING THE COMPACTED POLYMERIC HALOHYDROCARBON TO THE FUSION POINT OF THE POLYMER AND REMOVING THE POYMERIC HALOHYDROCARBON FROM THE MOLD.
Claim 2
Dependent Claim
170 words
A PROCESS OF MOLDING A SHAPED ARTICLE FROM A POLYMERIC HALOHYDROCARBON MEMBER OF THE GORUP CONSISTING OF POLYTETRAFLUOROETHYLENE, POLYMONOCHLOROTRIFLUOROETHYLENE, POLYVINYL FLUORIDE, POLYVINYLIDENE FLUORIDE, POLYHEXAFLUOROPROPENE, COPOLYMERS OF TETRAFLUOROETHYLENE WITH A MEMBER OF THE GROUP CONSITING OF HEXAFLUOROPROPENE, VINYL FLUORIDE AND VINYLIDENE FLUORIDE AND A COPOLYMER OF HEXAFLUOROPROPENE WITH VINYL FLUORIDE AND VINYLIDENE FLUORIDE AND A COPOLYMER OF HEXAFLUOROPROPENE WITH VINYL FLUORIDE COMPRISING PLACING IN A POROUS MOLD A SLURRY OF THE POLYMERIC HALOHYDROCARBON IN A LIQUID DISPERSANT INERT TO AND CAPABLE OF WETTING THE POLYMERIC HALOHYDROCARBON AND VAPORIZABLE AT A TEMPERATURE BELOW THE FUSION POINT OF THE POLYMERIC HALOHYDROCARBON, APPLYING A PRESSURE DIFFERENTIAL BETWEEN ONE SIDE OF THE MOLD AND THE OTHER TO CONFORM THE POLYMERIC HALOHYDROCARBON TO THE MOLD, PLACING THE MOLD CONTAINING THE CONFORMED HALOHYDROCARBON IN A HYDROCLAVE, APPLYING A PRESSURE OF AT LEAST 1,000 P.S.I. IN THE HYDROCLAVE TO COMPACT THE POLYMERIC HALOHYDROCARBON AND THEREAFTER HEATING THE MOLD CONTAINING THE COMPACTED POLYMERIC HALOHYDROCARBON TO THE FUSION POINT OF THE POLYMER AND REMOVING THE POYMERIC HALOHYDROCARBON FROM THE MOLD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |