US2528933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition containing glycidyl ethers and alumina
Assignee: Shell Development Co
•
Filing: 1949-04-29
•
Granted: 1950-11-07
•
Expires: 1969-04-29
Abstract
No abstract record available.
Inventors
- 👤 Quentin T Wiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/38; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/22; C08G59/226; C09; C09J; C09J163/00; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L2666/00; C08L2666/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION ADAPTED FOR ADHESIVE PURPOSES UPON ADDITION OF A HARDENING AGENT WHICH COMPRISES GLYCIDYL ETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 IN ADMIXTURE WITH AN ADDED 25 TO 100% OF COMMINUTED ALUMINA, THE PERCENTAGE OF ADDED ALUMINA BEING BASED UPON THE AMOUNT BY WEIGHT OF SAID GLYCIDYL ETHER.
Claim 2
Dependent Claim
54 words
A COMPOSITION ADAPTED FOR ADHESIVE PURPOSES UPON ADDITION OF A HARDENING AGENT WHICH COMPRISES GLYCIDYL ETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 IN ADMIXTURE WITH AN ADDED 25 TO 100% OF COMMINUTED ALUMINA, THE PERCENTAGE OF ADDED ALUMINA BEING BASED UPON THE AMOUNT BY WEIGHT OF SAID GLYCIDYL ETHER.
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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |