US3035012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymer of polychloroprene backbone and 2, 3-dichlorobutadiene-1, 3 and method of preparation
Assignee: EIDP Inc
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Filing: 1958-12-23
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Granted: 1962-05-15
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Expires: 1978-12-23
Abstract
No abstract record available.
Inventors
- 👤 Pariser Rudolph
- 👤 Gilbert T Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:02
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN ELASTOMERIC GRAFT COPOLYMER COMPRISING FROM 8 TO 70% BY WEIGHT OF POLYMER CHAIN UNITS DERIVED FROM 2,3DICHLOROBUTADIENE-1,3, WHICH POLYMER CHAIN UNITS ARE GRAFTED ONTO A PERFORMED POLYMER DERIVED PREPONDERANTLY FROM CHLOROPRENE BY POLYMERIZATION, SAID GRAFT COPOLYMER BEING LESS THAN 50% SOLUBLE IN BOILING BENZENE AND HAVING, WHEN CURED, A BRITTLE POINT BELOW -30* C.
Claim 2
Dependent Claim
55 words
AN ELASTOMERIC GRAFT COPOLYMER COMPRISING FROM 8 TO 70% BY WEIGHT OF POLYMER CHAIN UNITS DERIVED FROM 2,3DICHLOROBUTADIENE-1,3, WHICH POLYMER CHAIN UNITS ARE GRAFTED ONTO A PERFORMED POLYMER DERIVED PREPONDERANTLY FROM CHLOROPRENE BY POLYMERIZATION, SAID GRAFT COPOLYMER BEING LESS THAN 50% SOLUBLE IN BOILING BENZENE AND HAVING, WHEN CURED, A BRITTLE POINT BELOW -30* C.
References Cited (Backward Citations)
US1965369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |