Patent US4271287A successfully refreshed from Google Patents.
Patent US3400090A successfully refreshed from Google Patents.
US3400090A
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US
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Sealing compositions comprising halogenated butyl rubber, drying oil and liquid polyiisobutylene
Assignee: WR Grace and Co
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Filing: 1964-11-09
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Granted: 1968-09-03
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Philip H Maslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/26; C09J123/28; C09J123/283; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3076777A
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US3169566A
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US3050497A
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US3342789A
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US3320333A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |