Patent US3703496A successfully refreshed from Google Patents.
US3703496A
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US
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Hydrolytic stabilizer of phosphite esters and use as epoxy resin stabilizer
Assignee: Hooker Chemical Corp
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Filing: 1970-08-03
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Granted: 1972-11-21
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Expires: 1990-08-03
Abstract
Abstract THIS INVENTION IS DIRECTED TO A NOVEL PHOSPHITE ESTER COMPOSITION CONTAINING PARTICULAR NITROGEN-CONTAINING COMPOUNDS WHICH STABILIZES THE PHOSPHITE ESTER AGAINST HYDROLYSIS AND REMAINS IN SOLUTION, RELATES TO NOVEL EPOXY RESIN COMPOSITIONS CONTAINING THE STABILIZED PHOSPHITE ESTER COMPOSITION, AND RELATES TO THE STABILIZING USE.
Inventors
- 👤 James J Hodan
- 👤 William L Schall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C07; C07F; C07F9/00; C07F9/02; C07F9/025; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4071; C08K5/49; C08K5/51; C08K5/52; C08K5/524
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |