Patent US3153032A successfully refreshed from Google Patents.
US3153032A
Expired / Lapsed
US
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Pigments from naphthalene-ringsubstituted naphthol as
Assignee: Interchemical Corp
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Filing: 1961-11-15
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Granted: 1964-10-13
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Dehn
- 👤 John J Maitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:55
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/01; C07C65/105; C07C65/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A LIGHTFAST MAROON PIGMENT COMPRISING THE COMPOUND
Claim 2
Dependent Claim
7 words
A LIGHTFAST MAROON PIGMENT COMPRISING THE COMPOUND
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |