Patent US2314676A successfully refreshed from Google Patents.
US2848441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New hydroxy-carboxylic acid and condensation thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1955-08-23
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Granted: 1958-08-19
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Expires: 1975-08-23
Abstract
No abstract record available.
Inventors
- 👤 Reynolds Reginald John William
- 👤 Vickers Edward Jervis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:34
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C07; C07C; C07C59/00; C07C59/01; C07C59/115
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
A:A-BIS-(CHLOROMETHYL)-B-HYDROXYPROPIONIC ACID.
Claim 2
Dependent Claim
2 words
A:A-BIS-(CHLOROMETHYL)-B-HYDROXYPROPIONIC ACID.
Claim 3
Dependent Claim
8 words
PROCESS WHICH COMPRISES SELF-CONDENSING, BY HEATING, A:A-BIS-(CHLOROMETHYL)-B-HYDROXYPROPIONIC ACID.
Claim 4
Dependent Claim
8 words
PROCESS WHICH COMPRISES SELF-CONDENSING, BY HEATING, A:A-BIS-(CHLOROMETHYL)-B-HYDROXYPROPIONIC ACID.
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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |