Patent US3531508A successfully refreshed from Google Patents.
US3531508A
Expired / Lapsed
US
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Nitrile substituted organo-polysiloxane polymers
Assignee: Product Research and Chemical Corp
•
Filing: 1967-06-26
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Granted: 1970-09-29
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Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Gordon K Goldman
- 👤 Lester Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:57
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2999077A
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US3026278A
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US2970150A
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US3035016A
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US3109013A
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US3168544A
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US3161614A
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US3177236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |