US2515306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing esters of omega, omega, omega-trihalo aliphatic carboxylic acids
Assignee: Uniroyal Inc
•
Filing: 1949-04-26
•
Granted: 1950-07-18
•
Expires: 1969-04-26
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
- 👤 Sargent Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:57
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/62; C07C69/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD WHICH COMPRISES REACTING AN ESTER OF A 2,W,W,W-TETRAHALOGENOALKANOIC ACID WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST WHILE MAINTAINING NON-BASIC REACTION CONDITIONS AND THEREBY EFFECTING SELECTIVE REPLACEMENT OF THE 2-HALOGEN ATOM WITH HYDROGEN.
Claim 2
Independent Claim
36 words
THE METHOD WHICH COMPRISES REACTING AN ESTER OF A 2,W,W,W-TETRAHALOGENOALKANOIC ACID WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST WHILE MAINTAINING NON-BASIC REACTION CONDITIONS AND THEREBY EFFECTING SELECTIVE REPLACEMENT OF THE 2-HALOGEN ATOM WITH HYDROGEN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |