US3637799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension medium for nitrilopolyacetonitrile
Assignee: Stauffer Chemical Co
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Filing: 1968-12-27
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Granted: 1972-01-25
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Expires: 1988-12-27
Abstract
Abstract A SUSPENSION MEDIUM FOR FORMING A HOMOGENEOUS SLURRY OF NITRILOPOLYACETONITRILE DURING MANUFACTURE THEREOF IS DESCRIBED HEREIN. THE SUSPENSION MEDIUM MAY BE DESCRIBED AS AN AQUEOUS SOLUTION OF AN ALKALI METAL INORGANIC PHOSPHATE COMPOUND PRESENT IN AN AMOUNT RANGING BETWEEN 0.1 AND ABOUT 15% BY WEIGHT. THE PRESENCE OF THE ALKALI METAL INORGANIC PHOSPHATES AIDS IN MAINTAINING A HOMOGENEOUS SLURRY OF THE TITRILOGOLYACETONITRIES.
Inventors
- 👤 Jack L Herz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:18
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |