US2859199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable mixture of styrene and a polyester reaction product
Assignee: PPG Industries Inc
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Filing: 1953-04-06
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Granted: 1958-11-04
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Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Earl E Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:46
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; C08G63/02; C08G63/12; C08G63/52; C08G63/56; C08G63/58; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A POLYMERIZABLE MIXTURE OF (A) STYRENE AND (B) A REACTION PRODUCT OBTAINED BY HEATING A MIXTURE OF (B'') A GLYCIDYL POLYETHER FORMED BY REACTING, IN THE PRESENCE OF ALKALI, P,P''-ISOPROPYLIDENEDIPHENOL AND EPICHLOROHYDRIN AND (B") A MATERIAL OF A CLASS CONSISTING OF (I) AN ESTERIFIABLE MIXTURE OF A (1) GLYCOL OF A CLASS CONSISTING OF PROPYLENE GLYCOL AND DIETHYLENE GLYCOL AND (2) A MIXTURE OF MALEIC ACID AND AN ACID OF A CLASS CONSISTING OF PHTHALIC ACID AND ADIPIC ACID AND (II) THE PREFORMED POLYESTER OF ESTERIFIABLE MIXTURE (I).
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |