US2437284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial rubber from vinyl resin, phenol-aldehyde resin, and plasticizer
Assignee: Individual
•
Filing: 1943-11-22
•
Granted: 1948-03-09
•
Expires: 1963-11-22
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08K5/12; C08K5/49; C08K5/51; C08K5/52; C08L57/00; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1592082A
Cited
CH147067A
Cited
US2057690A
Cited
US2006345A
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US2270662A
Cited
US2310889A
Cited
US2336792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |