US2644804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing composition containing polytrifluorochloroe thylene and an inorganic antifriction agent
Assignee: MW Kellogg Co
•
Filing: 1950-04-22
•
Granted: 1953-07-07
•
Expires: 1970-04-22
Abstract
No abstract record available.
Inventors
- 👤 Louis C Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:50
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/30; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PACKING COMPOSITION WHICH COMPRISES A COHERENT MASS OF A THERMOPLASTIC POLYMER CONSISTING ESSENTIALLY OF POLYMERIZED TRIFLUOROCHLOROETHYLENE HAVING AN N.S.T. BETWEEN ABOUT 240* C. AND ABOUT 340* C. IN ADMIXTURE WITH A COMMINUTED SOLID INORGANIC ANT-FRICTION AGENT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND MOLYBDENUM SULFIDE SAID POLYMER AND SAID INORGANIC ANTI-FRICTION AGENT COMPRISING AT LEAST 70 WEIGHT PER CENT OF THE PACKING COMPOSITION, THE WEIGHT RATIO OF THE THERMOPLASTIC POLYMER TO THE ANTIFRICTION AGENT BEING BETWEEN ABOUT 4:1 AND ABOUT 1:2.
Claim 2
Dependent Claim
83 words
A PACKING COMPOSITION WHICH COMPRISES A COHERENT MASS OF A THERMOPLASTIC POLYMER CONSISTING ESSENTIALLY OF POLYMERIZED TRIFLUOROCHLOROETHYLENE HAVING AN N.S.T. BETWEEN ABOUT 240* C. AND ABOUT 340* C. IN ADMIXTURE WITH A COMMINUTED SOLID INORGANIC ANT-FRICTION AGENT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND MOLYBDENUM SULFIDE SAID POLYMER AND SAID INORGANIC ANTI-FRICTION AGENT COMPRISING AT LEAST 70 WEIGHT PER CENT OF THE PACKING COMPOSITION, THE WEIGHT RATIO OF THE THERMOPLASTIC POLYMER TO THE ANTIFRICTION AGENT BEING BETWEEN ABOUT 4:1 AND ABOUT 1:2.
References Cited (Backward Citations)
US2392388A
Cited
US2393967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |