US2591604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of naphthalenemethylol esters
Assignee: Armour and Co
•
Filing: 1948-04-03
•
Granted: 1952-04-01
•
Expires: 1968-04-03
Abstract
No abstract record available.
Inventors
- 👤 Richard A Reck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/66; C07C69/73; C07C69/734; C07C69/02; C07C69/22; C07C69/30; C07C69/34; C07C69/67; C07C69/675; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/105; C08K5/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
FATTY ACID ESTERS OF POLYNUCLEAR CONDENSED AROMATIC METHANOLS IN WHICH THE ONLY LINKAGE BETWEEN THE AROMATIC NUCLEUS AND SUBSTITUENTS ON THE AROMATIC NUCLEUS ARE CARBON TO CARBON BONDS AND IN WHICH THE ACYL RADICAL HAS FROM 12 TO 30 CARBON ATOMS.
Claim 2
Dependent Claim
41 words
FATTY ACID ESTERS OF POLYNUCLEAR CONDENSED AROMATIC METHANOLS IN WHICH THE ONLY LINKAGE BETWEEN THE AROMATIC NUCLEUS AND SUBSTITUENTS ON THE AROMATIC NUCLEUS ARE CARBON TO CARBON BONDS AND IN WHICH THE ACYL RADICAL HAS FROM 12 TO 30 CARBON ATOMS.
References Cited (Backward Citations)
US2260556A
Cited
US2282557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |