Patent US3630233A successfully refreshed from Google Patents.
Patent US2934515A successfully refreshed from Google Patents.
US2934515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene-silicone compositions
Assignee: Dow Silicones Corp
•
Filing: 1957-07-01
•
Granted: 1960-04-26
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 George M Konkle
- 👤 Thomas D Talcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) SOLID POLYTETRAFLUOROETHYLENE AND 20 TO 80 PARTS BY WEIGHT PER 100 PARTS OF (1) OF (2) AN ORGANOPOLYSILOXANE GUM SELECTED FROM THE GROUP CONSISTING OF POLYMERS IN WHICH ALL OF THE RECURRING UNITS ARE OF THE FORMULA
Claim 2
Dependent Claim
46 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) SOLID POLYTETRAFLUOROETHYLENE AND 20 TO 80 PARTS BY WEIGHT PER 100 PARTS OF (1) OF (2) AN ORGANOPOLYSILOXANE GUM SELECTED FROM THE GROUP CONSISTING OF POLYMERS IN WHICH ALL OF THE RECURRING UNITS ARE OF THE FORMULA
References Cited (Backward Citations)
US2719833A
Cited
US2710290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |