Patent US2340971A successfully refreshed from Google Patents.
US2534883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified rubber products
Assignee: Jasco Inc
•
Filing: 1946-11-16
•
Granted: 1950-12-19
•
Expires: 1966-11-16
Abstract
No abstract record available.
Inventors
- 👤 William H Smyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:27
CPC Classifications
C; C08; C08L; C08L7/00; C08L21/00; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08L91/00; C08L91/06; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31826; Y10T428/31841; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOSITION COMPRISING ESSENTIALLY RUBBER, A PETROLEUM HYDROCARBON WAX, AND A POLYISOBUTYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 2,000
Claim 2
Dependent Claim
22 words
A COMPOSITION COMPRISING ESSENTIALLY RUBBER, A PETROLEUM HYDROCARBON WAX, AND A POLYISOBUTYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 2,000
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |