US3306938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkylol alkylphenol process
Assignee: GAF Chemicals Corp
•
Filing: 1963-10-08
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Granted: 1967-02-28
•
Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Welch Eldred
- 👤 David E Graham
- 👤 Nashu Abdul Munim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:24
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/68; C07C37/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A PROCESS FOR DECOLORIZING DIALKYLOL ALKYLPHENOLS OF THE FORMULA:
Claim 2
Dependent Claim
9 words
A PROCESS FOR DECOLORIZING DIALKYLOL ALKYLPHENOLS OF THE FORMULA:
References Cited (Backward Citations)
US1720052A
Cited
US2912395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |