Patent US3598868A successfully refreshed from Google Patents.
US3598868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(phenylsulfonyl)cyclopropanecarboxylic acids
Assignee: University of California Berkeley
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Filing: 1968-03-12
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Granted: 1971-08-10
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Expires: 1988-03-12
Abstract
Abstract THE INVENTION IS A NEW GROUP OF COMPOUNDS: 1-((R1,R2-BENZENETRI-YL)-SO2)-,1-XOOC-,2-R3,2-R4,3-R5,3- R6-CYCLOPROPANE WHEREIN X IS HYDROGEN OR A NON-TOXIC CATION, AND WHEREIN R1, R2, R3, R4, R5, AND R6 ARE HYDROGEN OR ALKYL. THESE COMPOUNDS ARE USEFUL AS CHELATING AGENTS, RESOLVING AGENTS, INTERMEDIATES TO PRODUCE INSECTICIDES, AND AS NON-CALORIC SWEETENERS.
Inventors
- 👤 Donald J Cram
- 👤 Aleksander Ratajczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:18
CPC Classifications
C; C07; C07C; C07C317/00; A; A23; A23L; A23L27/00; A23L27/20; A23L27/204
Claims Analysis
Total Claims: 0
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |