US2935506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New dyestuffs and process for dyeing therewith
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1957-08-26
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Granted: 1960-05-03
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Heslop Robert Norman
- 👤 Mawson Jack Frankland
- 👤 Stephen William Elliot
- 👤 Wardleworth James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
WATER-SOLUBLE COLORED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF AZO, ANTHRAQUINONE, PHTHALOCYANINE, AND NITRO-GROUP-SUBSTITUTED WATER-SOLUBLE COLORED COMPOUNDS SUBSTITUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 2:6-DIHALOGENO-4-PRIMIDYLAMINO RADICAL AND THE 4:6-DIHALOGENO-2-PYRIMIDYLAMINO RADICAL.
Claim 2
Dependent Claim
34 words
WATER-SOLUBLE COLORED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF AZO, ANTHRAQUINONE, PHTHALOCYANINE, AND NITRO-GROUP-SUBSTITUTED WATER-SOLUBLE COLORED COMPOUNDS SUBSTITUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 2:6-DIHALOGENO-4-PRIMIDYLAMINO RADICAL AND THE 4:6-DIHALOGENO-2-PYRIMIDYLAMINO RADICAL.
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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |