US3256345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of hydroxyalkyl and aminoakyl substituted aromatic compounds
Assignee: Phillips Petroleum Co
•
Filing: 1962-09-28
•
Granted: 1966-06-14
•
Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Paul W Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:28
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
1-HEXADECYL-2-PHENYLETHAROL.
Claim 2
Dependent Claim
1 words
1-HEXADECYL-2-PHENYLETHAROL.
References Cited (Backward Citations)
GB384314A
Cited
US2606610A
Cited
US2663724A
Cited
US2748178A
Cited
US3082267A
Cited
US3051766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |