US3271353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters and pressure-sensitive adhesive compositions
Assignee: Union Oil Company of California
•
Filing: 1962-12-27
•
Granted: 1966-09-06
•
Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Szawlowski
- 👤 Louis A Joo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/02; C08G63/12; C08G63/52; C08G63/66
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A PRESSURE-SENSITIVE ADHESIVE COMPOSITION FORMED BY THE ESTERIFICATION OF COMPLEX CARBOXYLIC ACIDS DERIVED FROM SOLVENT EXTRACTS OBTAINED IN THE SOLVENT EXTRACTION OF MINERAL LUBRICATING OILS USING A SOLVENT SELECTIVE FOR AROMATIC COMPOUNDS BY METALATION, CARBONATION AND ACIDIFICATION OF SAID SOLVENT EXTRACTS, MALEIC ANHYDRIDE, TRIETHYLENE GLYCOL AND DIETHYLENE GLYCOL USING AN EXCESS OF TOTAL ACID EQUIVALENTS OVER THE TOTAL HYDROXYL EQUIVALENTS.
Claim 2
Dependent Claim
39 words
A PRESSURE-SENSITIVE ADHESIVE COMPOSITION IN ACCORDANCE WITH CLAIM 7 IN WHICH THE RATIO OF TOTAL ACID EQUIVALENTS TO TOTAL HYDROXYL EQUIVALENTS IS ABOUT 1.1/1 TO 2.5.1 AND SAID ESTERIFICATION IS CONDUCTED AT A TEMPERATURE OF ABOUT 400* TO 450*F.
Claim 3
Dependent Claim
32 words
AN ADHESIVE COMPOSITION IN ACCORDANCE WITH CLAIM 8 CONTAING AN INERT FILLER OF THE GROUP CONSISTING OF SILICA FLOUR, ZINC OXIDE, IRON OXIDE, BARIUM SULFATE, GLASS WOOL, FIBER GLASS, AND POWDERED CLAY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |