US3210345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanine dyestuffs
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-06-25
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Granted: 1965-10-05
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Gamlen George Albert
- 👤 Stead Cecil Vivian
- 👤 Williams Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/32; C09B47/08; C09B47/24; C09B47/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
CA600353A
Cited
US2342191A
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US2506020A
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US2863875A
Cited
US3053849A
Cited
US3053850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |