US3291785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diols of the reaction product of rosin and beta-propiolactone
Assignee: Individual
•
Filing: 1965-03-16
•
Granted: 1966-12-13
•
Expires: 1985-03-16
Abstract
No abstract record available.
Inventors
- 👤 Noah J Halbrook
- 👤 Ray V Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:15
CPC Classifications
C; C07; C07C; C07C61/00; C07C61/16; C07C61/28; C07C61/29; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G63/52; C08G63/54; C08G63/553; C09; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
8 words
THE ISOMERIC DIOL COMPOUNDS REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
8 words
THE ISOMERIC DIOL COMPOUNDS REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
82 words
A PROCESS FOR PREPARING A COMPOSITION OF MATTER COMPRISING A MIXTURE OF THE ISOMERIC DIOLS OF CLAIM 1, WHICH COMPRISES REDUCING, UNDER AN INERT GAS WITH LITHIUM ALUMINUM HYDRIDE AT A TEMPERATURE OF ABOUT FROM 0* TO 50*C., THE PRODUCT OBTAINED BY THE REACTION OF ROSIN AND B-PROPIOLACTONE AT 225*C., THE LITHIUM ALUMINUM HYDRIDE AND THE REACTION PRODUCT OF ROSIN AND B-PROPIOLACTONE BEING EMPLOYED IN A RATIO OF ABOUT ONE TO FIVE MOLES OF THE HYDRIDE PER MOLE OF THE REACTION PRODUCT.
References Cited (Backward Citations)
US2817677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |