US2805957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanine pigments
Assignee: EIDP Inc
•
Filing: 1953-11-12
•
Granted: 1957-09-10
•
Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Ehrich Felix Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:16
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/48; C07F9/4808; C07F9/4841; C09B47/06; C09B47/067; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COPPER PHTHALOCYANINE PIGMENT HIGHLY RESISTANT TO FLOCCULATION IN AN ORGANIC COATING VEHICLE COMPRISING A MIXTURE OF 85 TO 98 MOL PERCENT OF A COPPER PHTHALOCYANINE PIGMENT SUBJECT TO SAID FLOCCULATION AND 15 TO 2 MOL PERCENT OF A SUBSTITUTED COPPER PHTHALOCYANINE IN WHICH THE SUBSTITUENT IS FROM THE CLASS CONSISTING OF CARBOXYL (COOH), CARBONAMIDE (CONH2), AND PHOSPHONOUS ACID (P(OH)2).
Claim 2
Dependent Claim
60 words
A COPPER PHTHALOCYANINE PIGMENT HIGHLY RESISTANT TO FLOCCULATION IN AN ORGANIC COATING VEHICLE COMPRISING A MIXTURE OF 85 TO 98 MOL PERCENT OF A COPPER PHTHALOCYANINE PIGMENT SUBJECT TO SAID FLOCCULATION AND 15 TO 2 MOL PERCENT OF A SUBSTITUTED COPPER PHTHALOCYANINE IN WHICH THE SUBSTITUENT IS FROM THE CLASS CONSISTING OF CARBOXYL (COOH), CARBONAMIDE (CONH2), AND PHOSPHONOUS ACID (P(OH)2).
References Cited (Backward Citations)
GB496819A
Cited
US2242469A
Cited
US2285359A
Cited
US2613128A
Cited
US2647908A
Cited
US2615027A
Cited
US2647128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |