US3139442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically active grignard-type compounds and their preparation
Assignee: Beazer East Inc
•
Filing: 1962-08-22
•
Granted: 1964-06-30
•
Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Rudner Bernard
- 👤 Richard A Bafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:45
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; C08; C08F; C08F4/00; C08F4/06; C08F4/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A COMPOUND REPRESENTABLE BY THE FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND REPRESENTABLE BY THE FORMULA:
Claim 3
Dependent Claim
5 words
MAGNESIUM CHLORIDE- ASSOCIATED, CHLOROBENZENE-SOLVATED PHENYLMAGNESIUM-A-D-TOCOPHEROXIDE.
Claim 4
Dependent Claim
5 words
MAGNESIUM CHLORIDE- ASSOCIATED, CHLOROBENZENE-SOLVATED PHENYLMAGNESIUM-A-D-TOCOPHEROXIDE.
References Cited (Backward Citations)
US2255072A
Cited
US2255073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |