Patent US2437046A successfully refreshed from Google Patents.
US2437046A
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US
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Stabilization of polyesters
Assignee: Resinous Products and Chemical Co
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Filing: 1943-10-15
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Granted: 1948-03-02
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Expires: 1963-10-15
Abstract
No abstract record available.
Inventors
- 👤 Jr David A Rothrock
- 👤 Richard F Conyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08G; C08G63/00; C08G63/68; C08G63/692; C08G63/6924; C08K3/00; C08K3/32; C08K5/5398
Claims Analysis
Total Claims: 0
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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) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |