Patent US3014891A successfully refreshed from Google Patents.
US3014891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous compositions
Assignee: —
•
Filing: —
•
Granted: 1961-12-26
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Expires: 1978-12-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:32
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/20; C08G64/04; C08G64/06; C08G64/14; C08L; C08L69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A CROSS-LINKED RESINOUS MATERIAL COMPRISING THE REACTION PRODUCT OF (1) A HIGH MOLECULAR WEIGHT RESINOUS LINEAR CARBONATE POLYMER OF A DIHYDRIC PHENOL AND A CARBONATE PRECURSOR SELECTED FROM THE CLASS CONSISTING OF CARBONATE ESTERS, CARBONYL HALIDES AND HALOFORMATES OF A DIHYDRIC PHENOL, AND (2) AT LEAST ABOUT 0.5 PERCENT BASED UPON THE WEIGHT OF THE CARBONATE POLYMER OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF HEXAMETHYLENETETRAMINE AND PARAFORM.
Claim 2
Dependent Claim
69 words
A CROSS-LINKED RESINOUS MATERIAL COMPRISING THE REACTION PRODUCT OF (1) A HIGH MOLECULAR WEIGHT RESINOUS LINEAR CARBONATE POLYMER OF A DIHYDRIC PHENOL AND A CARBONATE PRECURSOR SELECTED FROM THE CLASS CONSISTING OF CARBONATE ESTERS, CARBONYL HALIDES AND HALOFORMATES OF A DIHYDRIC PHENOL, AND (2) AT LEAST ABOUT 0.5 PERCENT BASED UPON THE WEIGHT OF THE CARBONATE POLYMER OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF HEXAMETHYLENETETRAMINE AND PARAFORM.
References Cited (Backward Citations)
US1697713A
Cited
US1933124A
Cited
US2027337A
Cited
US2493075A
Cited
US2614096A
Cited
BE532543A
Cited
US2866773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |