Patent US3142675A successfully refreshed from Google Patents.
US3142675A
Expired / Lapsed
US
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Novel derivatives of 3-carboxybenzothiazolenylbenzothiazolylalkane
Assignee: Pure Oil Co
•
Filing: 1961-05-18
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Granted: 1964-07-28
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Rai Charanjit
- 👤 John B Braunwarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:10
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; Y; Y10; Y10S; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A COMPOUND OF THE GROUP CONSISTING OF BASIC ESTERS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A COMPOUND OF THE GROUP CONSISTING OF BASIC ESTERS OF THE FORMULA
Claim 3
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |