US3351646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium and tin derivatives of styrenes and the preparation thereof
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-01-04
•
Granted: 1967-11-07
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
- 👤 John E Engelhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
AN ADDUCT OF MAGNESIUM WITH A STYRENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND C1 TO C7 ALKYL, ALKOXYL AND AROXYL SUBSTITUTED STYRENES.
Claim 2
Dependent Claim
25 words
AN ADDUCT OF MAGNESIUM WITH A STYRENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND C1 TO C7 ALKYL, ALKOXYL AND AROXYL SUBSTITUTED STYRENES.
References Cited (Backward Citations)
US2999889A
Cited
US3168582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |