Patent US3337525A successfully refreshed from Google Patents.
US3337525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(hydroxyethyl polyethyleneoxyamino)-phenylazo naphthalen-1, 8-diols
Assignee: Deering Milliken Research Corp
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Filing: 1964-06-05
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Granted: 1967-08-22
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Peters Earl
- 👤 Hans H Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:28
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/13; D06P5/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US567615A
Cited
US718181A
Cited
US2045323A
Cited
US2131712A
Cited
US2453490A
Cited
US2750375A
Cited
US2849329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |