Patent US3238189A successfully refreshed from Google Patents.
US3238189A
Expired / Lapsed
US
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Trifluoromethyl-benzeneazosalicylic acid dyestuffs
Assignee: OTTO B MAY Inc
•
Filing: 1962-06-06
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Granted: 1966-03-01
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Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Ernest M May
- 👤 Fono Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:37
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/38; C09B45/46; C09B29/00; C09B29/10; C09B29/12; C09B29/14; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A DYE COMPOSITION WHICH IS 2-TRIFLUOROMETHYLBENZENEAZOSALICYLIC ACID.
Claim 2
Dependent Claim
7 words
A DYE COMPOSITION WHICH IS 2-TRIFLUOROMETHYLBENZENEAZOSALICYLIC ACID.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |