Patent US2945014A successfully refreshed from Google Patents.
US2945014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of boric acid and copolymers containing a plurality of hydroxyl groups
Assignee: Shell USA Inc
•
Filing: 1958-01-27
•
Granted: 1960-07-12
•
Expires: 1978-01-27
Abstract
No abstract record available.
Inventors
- 👤 Hartley James
- 👤 John D Downer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:01
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10L1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A BORIC ACID ESTER OF A POLYMERIC COMPOUND CONTAINING A PLURALITY OF NON-ACIDIC HYDROXYL GROUPS, SAID POLYMERIC COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 1000, AND HAVING BEEN PREPARED BY COPOLYMERIZATION OF AN ALPHA-ALKENE HAVING AT LEAST 8 CARBON ATOMS PER MOLECULE AND A VINYL ESTER OF A LOWER FATTY ACID, AND THEREAFTER HYDROLYZING THE RESULTING COPOLYMER TO HYDROLYZE AT LEAST A PART OF THE VINYL ESTER LINKAGES TO HYDROXYL GROUPS.
Claim 2
Dependent Claim
72 words
A BORIC ACID ESTER OF A POLYMERIC COMPOUND CONTAINING A PLURALITY OF NON-ACIDIC HYDROXYL GROUPS, SAID POLYMERIC COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 1000, AND HAVING BEEN PREPARED BY COPOLYMERIZATION OF AN ALPHA-ALKENE HAVING AT LEAST 8 CARBON ATOMS PER MOLECULE AND A VINYL ESTER OF A LOWER FATTY ACID, AND THEREAFTER HYDROLYZING THE RESULTING COPOLYMER TO HYDROLYZE AT LEAST A PART OF THE VINYL ESTER LINKAGES TO HYDROXYL GROUPS.
References Cited (Backward Citations)
GB413624A
Cited
US2388225A
Cited
US2341262A
Cited
US2343898A
Cited
US2457603A
Cited
US2445555A
Cited
US2444712A
Cited
US2607765A
Cited
US2716049A
Cited
US2800401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |