US2581925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 1-dichlorobutadiene-1, 3, its preparation and polymers
Assignee: Bridgestone Firestone Inc
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Filing: 1948-10-09
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Granted: 1952-01-08
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Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 Crane Grant
- 👤 Kenneth C Eberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:05
CPC Classifications
C; C07; C07C; C07C21/00; C07C21/02; C07C21/19; C07C21/20; C07C17/00; C07C17/25; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
COPOLYMERS OF 1,1 - DICHLOROBUTADIENE - 1,3 WITH UP TO 25% OF OTHER ETHYLENICALLY UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH AND SELECTED FROM THE GROUP CONSISTING OF STYRENE, ACRYLONITRILE, BUTADIENE, VINYL ACETATE, AND VINYLIDENE CHLORIDE.
References Cited (Backward Citations)
US1965369A
Cited
GB418469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |