US3132961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fillers, pigments and the like
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1960-09-28
•
Granted: 1964-05-12
•
Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Pierpoint Edward Keith
- 👤 Woodbury Norman Hopton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/12; C04; C04B; C04B20/00; C04B20/10; C04B20/1051; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FRO RENDERING FINELY DIVIDED NON-ALKALINE FILLER MATERIAL HYDROPHOBIC WHICH COMPISES PROVIDING A QUANTITY OF A FINELY DIVIDED NON-ALKALINE FILLER MATERIAL, MIXING AND MAINTAINING CONTACT BETWEEN SAID MATERIAL AND FROM 5 TO 25 PARTS PER HUNDRED PARTS OF MATERIAL TO BE TREATED OF A DIORGANOPOLYSILOXANE OF MOLECULAR WEIGHT NOT GREATER THAN 500 IN THE PRESENCE OF 0.1 TO 500 PARTS PER TEN THOUSAND PARTS OF MATERIAL TO BE TREATED OF AN ACID HAVING A DISSOCIATION CONSTANT OF NOT LESS THAN 1X10**-5 AND A VAPOR PRESSURE OF NOT LESS THAN 0.2 MM. HG AT 20*C., FOR A TIME SUFFICIENT TORENDER SAID FILLER MATERIAL HYDROPHOBIC.
Claim 2
Dependent Claim
104 words
A PROCESS FRO RENDERING FINELY DIVIDED NON-ALKALINE FILLER MATERIAL HYDROPHOBIC WHICH COMPISES PROVIDING A QUANTITY OF A FINELY DIVIDED NON-ALKALINE FILLER MATERIAL, MIXING AND MAINTAINING CONTACT BETWEEN SAID MATERIAL AND FROM 5 TO 25 PARTS PER HUNDRED PARTS OF MATERIAL TO BE TREATED OF A DIORGANOPOLYSILOXANE OF MOLECULAR WEIGHT NOT GREATER THAN 500 IN THE PRESENCE OF 0.1 TO 500 PARTS PER TEN THOUSAND PARTS OF MATERIAL TO BE TREATED OF AN ACID HAVING A DISSOCIATION CONSTANT OF NOT LESS THAN 1X10**-5 AND A VAPOR PRESSURE OF NOT LESS THAN 0.2 MM. HG AT 20*C., FOR A TIME SUFFICIENT TORENDER SAID FILLER MATERIAL HYDROPHOBIC.
References Cited (Backward Citations)
US2371050A
Cited
US2742378A
Cited
US2886460A
Cited
US2792378A
Cited
US2938009A
Cited
US3000749A
Cited
US3004859A
Cited
US3009287A
Cited
US2993809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |