USRE35009E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diketopyrrolopyrrole pigments in platelet form
Assignee: Novartis Corp
•
Filing: 1993-10-28
•
Granted: 1995-08-01
•
Expires: 2013-10-28
Abstract
Abstract Organic pigments selected from the diketopyrrolopyrrole, azo, isoindolinone and isoindoline series, which pigments consist of .Iadd.at least .Iaddend.50% by weight of platelets which are from 5 to 50 μm long, 2 to 50 μm wide and 0.01 to 5 μm thick, with the proviso that the ratios of length:thickness and width:thickness must be at least 3. The pigments in platelet form are excellently suited to producing effect colorations in high molecular weight organic material and in cosmetic products.
Inventors
- 👤 Philippe Bugnon
- 👤 Fritz Herren
- 👤 Bernhard Medinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:00
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0025; C09B67/003; C09B67/0001; C09B67/0014
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
48 words
A diketopyrrolopyrrole organic pigment, which consists of .Iadd.at least .Iaddend.50% by weight of platelets which are from 5 to 50 μm long, 2 to 50 μm wide and 0.01 to 5 μm thick, with the proviso that the ratios of length:thickness and width:thickness must be at least 3.
Claim 2
Dependent Claim
48 words
A diketopyrrolopyrrole organic pigment, which consists of .Iadd.at least .Iaddend.50% by weight of platelets which are from 5 to 50 μm long, 2 to 50 μm wide and 0.01 to 5 μm thick, with the proviso that the ratios of length:thickness and width:thickness must be at least 3.
Claim 3
Dependent Claim
19 words
An organic pigment according to claim 1, wherein the ratios of length:thickness and width:thickness must be at least 5.
Claim 4
Dependent Claim
12 words
An organic pigment according to claim 1 which is a 1,4-diketopyrrolo[3,4-c]pyrrole pigment.
Claim 5
Dependent Claim
10 words
An organic pigment according to claim 1 which is 1,4-diketo-3,6-diphenylpyrrolo-[3,4-c]pyrrole.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |