US2819232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dithiophosphate coating composition and process for preparing cellular resin therefrom
Assignee: Wyeth Holdings LLC
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Filing: 1954-03-01
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Granted: 1958-01-07
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Fortune James Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:53
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE PROCESS OF PREPARING A GAS-EXPANDED ORGANOPLASTIC COMPOSITION COMPRISES THE STEPS OF: ADMIXING AN ORGANOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA FORMALDEHYDE RESINS, POLYACRYLONITRILE, POLYSTYRENE, POLYVINYL CHLORIDE, COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, CELLULOSE ESTERS AND CELLULOSE EHTERS AND A SMALL AMOUTN OF FORM ABOUT 0.1% TO ABOUT 5% OF AN AMMONIUM DITHIOPHOSPHATE REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
60 words
THE PROCESS OF PREPARING A GAS-EXPANDED ORGANOPLASTIC COMPOSITION COMPRISES THE STEPS OF: ADMIXING AN ORGANOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA FORMALDEHYDE RESINS, POLYACRYLONITRILE, POLYSTYRENE, POLYVINYL CHLORIDE, COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, CELLULOSE ESTERS AND CELLULOSE EHTERS AND A SMALL AMOUTN OF FORM ABOUT 0.1% TO ABOUT 5% OF AN AMMONIUM DITHIOPHOSPHATE REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |