US3372138A
Expired / Lapsed
US
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Process for coloring synthetic linear polyesters
Assignee: Imperial Chemical Industries Ltd
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Filing: 1965-05-28
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Granted: 1968-03-05
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Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Bowman Francis
- 👤 Cooper Albert Charles
- 👤 Irving Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:16
CPC Classifications
C; C09; C09B; C09B69/00; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/688; C08G63/6884; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/36; C08K5/37; C08K5/375; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/56; C09B1/58; C09B1/585; C09B5/00; C09B5/24; C09B5/34; C09B5/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
PROCESS FOR THE MASS COLORATION OF SYNTHETIC LINEAR POLYESTERS WHICH COMPRISES USING AS COLOURING MATTER AT LEAST ONE DYESTUFF OF THE FORMULA:
Claim 2
Dependent Claim
22 words
PROCESS FOR THE MASS COLORATION OF SYNTHETIC LINEAR POLYESTERS WHICH COMPRISES USING AS COLOURING MATTER AT LEAST ONE DYESTUFF OF THE FORMULA:
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |