US3150167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparating hydroxy alkyl acrylates and methacrylates
Assignee: Cook Paint and Varnish Co
•
Filing: 1962-11-07
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Granted: 1964-09-22
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Expires: 1982-11-07
Abstract
No abstract record available.
Inventors
- 👤 Howard J Wright
- 👤 John F Bremmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:35
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54; C07C67/00; C07C67/24; C07C67/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE PROCESS FOR PREPARING HYDROXY PROPYL METHACRYLATE WHICH COMPRISES CONTACTING PROPYLENE OXIDE WITH METHACRYLIC ACID AT A TEMPERATURE NOT EXCEEDING 80*C., AND IN THE PRESENCE OF ALUMINUM TRICHLORIDE AS CATALYST.
Claim 2
Dependent Claim
30 words
THE PROCESS FOR PREPARING HYDROXY PROPYL METHACRYLATE WHICH COMPRISES CONTACTING PROPYLENE OXIDE WITH METHACRYLIC ACID AT A TEMPERATURE NOT EXCEEDING 80*C., AND IN THE PRESENCE OF ALUMINUM TRICHLORIDE AS CATALYST.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |