Patent US2773056A successfully refreshed from Google Patents.
US2773056A
Expired / Lapsed
US
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Stable finely divided alkyl amine dyes
Assignee: Honeywell International Inc
•
Filing: 1952-07-12
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Granted: 1956-12-04
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Expires: 1972-07-12
Abstract
No abstract record available.
Inventors
- 👤 Bertram M Helfaer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/001; C09B33/00; C09B33/02; C09B33/08; C09B33/10; C09B63/00; C09B69/02; C09B69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A DRY FREE-FLOWING PARTICULATE DYESTUFF CONSISTING OF AN ORGANIC AMINE NON-HYDROSCOPIC SALT HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
16 words
A DRY FREE-FLOWING PARTICULATE DYESTUFF CONSISTING OF AN ORGANIC AMINE NON-HYDROSCOPIC SALT HAVING THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2095077A
Cited
US2257545A
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US2267867A
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US2555603A
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US2588853A
Cited
US2625492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |