US2967186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted benzophenones
Assignee: Dow Chemical Co
•
Filing: 1958-11-05
•
Granted: 1961-01-03
•
Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 David A Gordon
- 👤 Billy E Burgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:55
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C07D303/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |