US2806059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making diaryl ketone polycarboxylic acids
Assignee: Olin Corp
•
Filing: 1954-03-30
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Granted: 1957-09-10
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Expires: 1974-03-30
Abstract
No abstract record available.
Inventors
- 👤 Herman A Bruson
- 👤 William F Brill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:40
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A PROCESS FOR PREPARING DIARYL KETONE POLYCARBOXYLIC ACIDS WHICH COMPRISES PASSING A GAS CONTAINING MOLECULAR OXYGEN IN CONTACT WITH A SUBSTITUTED DIARYL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
26 words
A PROCESS FOR PREPARING DIARYL KETONE POLYCARBOXYLIC ACIDS WHICH COMPRISES PASSING A GAS CONTAINING MOLECULAR OXYGEN IN CONTACT WITH A SUBSTITUTED DIARYL COMPOUND HAVING 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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |