US3728301A
Expired / Lapsed
US
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Dispersions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-08-13
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Granted: 1973-04-17
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Expires: 1990-08-13
Abstract
Abstract A COMPOSITION OF MATTER COMPRISING A DISPERSION OF A SOLID, PREFERABLY A PIGMENT, DYESTUFF OR TEXTILE FINISHING AGENT IN AN ORGANIC SOLVENT AND A POLYUREA ESSENTIALLY FREE FROM BASIC AMINO GROUPS WHICH CONTAINS AT LEAST TWO UREA GROUPS AND AT LEAST TWO ALKYL, ALKENYL OR ALKAPOLYENYL GROUPS CONTAINING AT LEAST EIGHT CARBON ATOMS, SAID POLYUREA BEING SOLUBLE IN THE ORGANIC OLVENT, AND THE USE OF THE SAID COMPOSITIONS OF MATTER.
Inventors
- 👤 D Spence
- 👤 A Topham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:20
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/009; C07; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C273/1818; C07C273/1827; C09K; C09K23/00; C09K23/16; D; D06; D06L; D06L1/00; D06L1/02; D06L1/06; D06L4/00; D06L4/60; D06L4/607; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D06M23/00; D06M23/10; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/5264; D06P1/5285; D06P1/64; D06P1/642; D06P1/649; D06P1/6491; D06P1/90; D06P1/92; D06P1/922; D06P1/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |