Patent US6283995B1 successfully refreshed from Google Patents.
US2820772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated olefin polymers plasticized with a telomer containing perfluorochloroolefin monomer units and method of preparing same
Assignee: 3M Co
•
Filing: 1953-12-30
•
Granted: 1958-01-21
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 William S Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A NOVEL COMPOSITION WHICH COMPRISES A THEREMOPLASTIC POLYMER OD A HALOGENATED OLEFIN, SAID HOLAGENATED OLEFIN CONTAINING AT LEAST ONE SUBSTITUTENT FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND FLUORINE, PROVIDED THAT NO MORE THAN 3 FLUORINE ATOMS ARE PRESENT IN EACH HALOGENATED OLEFIN USED IN FORMING THE POLYMER AND A OPEN CHAIN DISTILLABLE TELOMER CONTAIONING A PLURALITY OF PERFLUOROCHLOROOLEFIN MONOMER UNIT S AND HALOGEN TERMINAL GROUPS AS A PLASTICIZER.
Claim 2
Dependent Claim
69 words
A NOVEL COMPOSITION WHICH COMPRISES A THEREMOPLASTIC POLYMER OD A HALOGENATED OLEFIN, SAID HOLAGENATED OLEFIN CONTAINING AT LEAST ONE SUBSTITUTENT FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND FLUORINE, PROVIDED THAT NO MORE THAN 3 FLUORINE ATOMS ARE PRESENT IN EACH HALOGENATED OLEFIN USED IN FORMING THE POLYMER AND A OPEN CHAIN DISTILLABLE TELOMER CONTAIONING A PLURALITY OF PERFLUOROCHLOROOLEFIN MONOMER UNIT S AND HALOGEN TERMINAL GROUPS AS A PLASTICIZER.
References Cited (Backward Citations)
US2440800A
Cited
US2543530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |