Patent US3039994A successfully refreshed from Google Patents.
US3039994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters of hydroxybenzoic acids
Assignee: Universal Oil Products Co
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Filing: 1960-05-11
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Granted: 1962-06-19
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Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:15
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PRODUCTION OF A POLYMERIC PRODUCT WHICH COMPRISES POLYMERIZING AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF HYDROXY BENZOIC ACID AND ALKYL ESTERS OF ACETOXY BENZOIC ACIDS IN THE PRESENCE OF A TERTIARY AMINE HAVING A BOILING POINT GREATER THAN 150* C. IN SUFFFICIENT AMOUNT TO ACT SIMULTANEOUSLY AS A POLYMERIZATION CATALYST AND A SOLVENT.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE PRODUCTION OF A POLYMERIC PRODUCT WHICH COMPRISES POLYMERIZING AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF HYDROXY BENZOIC ACID AND ALKYL ESTERS OF ACETOXY BENZOIC ACIDS IN THE PRESENCE OF A TERTIARY AMINE HAVING A BOILING POINT GREATER THAN 150* C. IN SUFFFICIENT AMOUNT TO ACT SIMULTANEOUSLY AS A POLYMERIZATION CATALYST AND A SOLVENT.
References Cited (Backward Citations)
US2471023A
Cited
US2600376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |