US3271383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo dyes containing an nu-substituted benzothiazolyl group
Assignee: Mitsubishi Chemical Corp
•
Filing: 1963-06-11
•
Granted: 1966-09-06
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Expires: 1983-06-11
Abstract
No abstract record available.
Inventors
- 👤 Yamaya Wataru
- 👤 Matsui Koji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B1/00; C09B1/50; C09B1/501; C09B69/00; C09B69/001; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
CATIONIC AZO DYESTUFFS HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
7 words
CATIONIC AZO DYESTUFFS HAVING THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US1052137A
Cited
US2372066A
Cited
US2792384A
Cited
US2795577A
Cited
US2875193A
Cited
US3102878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |