US3492285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyestuffs containing a 4-organoamino - methylene - 1 - hydroxynaphthalene-2-carboxylic acid group
Assignee: Bayer AG
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Filing: 1966-07-11
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Granted: 1970-01-27
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Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Heinz Machatzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:39
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/008; C09B45/00; C09B45/02; C09B45/14; C09B62/44; C09B62/465; C09B62/47; C09B62/477; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |