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Patent US3530102A successfully refreshed from Google Patents.
US3530102A
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Terpolymers of maleic anhydride,vinyl alkyl ether and divinylbenzene and process for production thereof
Assignee: Union Carbide Corp
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Filing: 1968-05-16
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Granted: 1970-09-22
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Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Frank J Welch
- 👤 Herbert J Paxton Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:15
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12; C08F22/00; C08F22/04; C08F8/00; C08F8/12; C08F216/00; C08F216/12; C08F216/14; C08F216/16; C08F216/18; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 0
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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) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |