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Patent US2931788A successfully refreshed from Google Patents.
US2931788A
Expired / Lapsed
US
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Polymers of a vinylphenyl boronic ester
Assignee: Wyeth Holdings LLC
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Filing: 1957-09-06
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Granted: 1960-04-05
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Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Hoffmann
- 👤 Walter M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:48
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/025; C08; C08F; C08F30/00; C08F30/04; C08F30/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A POLYMER OF AN ESTER OF A VINYLPHENYL BORONIC ACID.
Claim 2
Dependent Claim
10 words
A POLYMER OF AN ESTER OF A VINYLPHENYL BORONIC ACID.
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |