US3234290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized phenols
Assignee: Shell USA Inc
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Filing: 1961-09-21
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Granted: 1966-02-08
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 Albert L Rocklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:48
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/178; C07C43/1782; C07C37/00; C07C37/68; C07C37/70; C07C37/84; C07C37/88; C07C39/00; C07C39/02; C07C39/06; C07C39/11; C07C39/12; C07C39/15; C07C39/16; C07C41/00; C07C41/01; C07C41/34; C07C41/40; C07C41/46; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
THE STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF A CRYPTOPHENOL WHEREIN EACH PHENOLIC HYDROXYL IS CRYPTOPHENOLIC CONTIANING AN AMOUNT OF UREA SUFFICIENT TO STABLIZE THE CRYPTOPHENONL AGAINST DISCOLORATION.
Claim 2
Dependent Claim
26 words
THE STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF A CRYPTOPHENOL WHEREIN EACH PHENOLIC HYDROXYL IS CRYPTOPHENOLIC CONTIANING AN AMOUNT OF UREA SUFFICIENT TO STABLIZE THE CRYPTOPHENONL AGAINST DISCOLORATION.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |