US3092639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 2-dimethyl-1-(substituted phenyl)-1, 3-dihydroxypropanes
Assignee: Fritzsche Brothers Inc
•
Filing: 1960-12-02
•
Granted: 1963-06-04
•
Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 Kulka Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:48
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C07C33/00; C07C33/40; C07C33/46; C07C39/00; C07C39/02; C07C39/11; C07D; C07D319/00; C07D319/04; C07D319/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A 2,2-DIMETHYL-1-(SUBSTITUTED PHENYL)-1,3-DIHYDROXYPROPANE HAVING THE FORMULA:
Claim 2
Dependent Claim
6 words
A 2,2-DIMETHYL-1-(SUBSTITUTED PHENYL)-1,3-DIHYDROXYPROPANE HAVING THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |