US3397173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable chloroprene-sulfur copolymer
Assignee: EIDP Inc
•
Filing: 1964-03-10
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Granted: 1968-08-13
•
Expires: 1984-03-10
Abstract
No abstract record available.
Inventors
- 👤 Collette John Wilfred
- 👤 Keown Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; C08F36/18; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |