US3402220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous blend of uncured butyl and cured chlorobutyl rubbers
Assignee: Primerica Inc
•
Filing: 1965-12-27
•
Granted: 1968-09-17
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Bierman Clarence Robert
- 👤 Fourier Walter Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:47
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2593681A
Cited
US2903437A
Cited
US2948700A
Cited
US3076777A
Cited
US3057390A
Cited
US3145189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |