Patent US3335164A successfully refreshed from Google Patents.
US3335164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of ketophenols
Assignee: Hoechst AG
•
Filing: 1963-11-12
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Granted: 1967-08-08
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Scherer Otto
- 👤 Habicht Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:36
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/50; C07C323/51; C07C323/52; C07C309/00; C07C309/63; C07C309/72; C07C309/73; C07C45/00; C07C45/51; C07C45/54; C07C49/00; C07C49/76; C07C49/82; C07C49/825
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
2,4 - DICHLOROBENZOIC ACID - (2-SEC. BUTY-4-ACETYL)PHENYL ESTER.
Claim 2
Dependent Claim
8 words
2,4 - DICHLOROBENZOIC ACID - (2-SEC. BUTY-4-ACETYL)PHENYL ESTER.
References Cited (Backward Citations)
US1745507A
Cited
FR866570A
Cited
US2419516A
Cited
US2567839A
Cited
US2949482A
Cited
US3184379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |