Patent US3329821A successfully refreshed from Google Patents.
US2782180A
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Modified polytetrafluoroethylene compositions and products related thereto
Assignee: EIDP Inc
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Filing: 1952-08-25
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Granted: 1957-02-19
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Expires: 1972-08-25
Abstract
No abstract record available.
Inventors
- 👤 Weidman Verne Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; B; B29; B29C; B29C43/00; B29C43/006; B29C43/22; B29C48/00; B29C48/022; B29C48/001; B29C48/0011; B29C48/03; B29C48/04; B29C48/12; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/25; B29K2105/251; B29K2707/00; B29K2707/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PRESSURE-COALESCING MOLDING COMPOSITING COMPRISING COLLOIDAL PARTICLES OF A POLYMER OF THE CLASS CONSISTING OF TETRAFLUOROETHYLENE POLYMERS AND CHLOROTRIFLUOROETHYLENE POLYMERS, INTIMATELY ADMIXED WITH COKE FLOUR FILLER, THE QUANTITY OF FILLER BEING FROM 1 TO 9 PARTS BY WEIGHT PER PART OF SAID POLYMER, THE MINIMUM SINTERING TEMPERATURE OF THE POLYMER BEING WITHIN THE RANGE OF 300* TO 3 27*C.
Claim 2
Dependent Claim
59 words
A PRESSURE-COALESCING MOLDING COMPOSITING COMPRISING COLLOIDAL PARTICLES OF A POLYMER OF THE CLASS CONSISTING OF TETRAFLUOROETHYLENE POLYMERS AND CHLOROTRIFLUOROETHYLENE POLYMERS, INTIMATELY ADMIXED WITH COKE FLOUR FILLER, THE QUANTITY OF FILLER BEING FROM 1 TO 9 PARTS BY WEIGHT PER PART OF SAID POLYMER, THE MINIMUM SINTERING TEMPERATURE OF THE POLYMER BEING WITHIN THE RANGE OF 300* TO 3 27*C.
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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |