US2565152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of impregnating a fibrous sheet with a phenolic resin
Assignee: Westinghouse Electric Corp
•
Filing: 1946-10-30
•
Granted: 1951-08-21
•
Expires: 1966-10-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Wachter
- 👤 Cyril J Straka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/70; D06M15/71; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE PROCESS FOR APPLYING A PARTIALLY REACTED THERMOSETTING PHENOL ALDEHYDE RESIN IN SOLUTION INJ A VOLATILE ORGANIC SOLVENT TO FIBROUS MATERIAL, IN A VOLATILE ORGANIC SOLVENT TO FIBROUS MATETION OF THE PHENOLIC RESIN AN ACCELERATOR COMPRISING FROM 0.1% TO 2% OF THE WEIGHT OF THE RESIN OF A PRIMARY ALIPHATIC ORGANIC AMINE HAVING A METHYLENE GROUP ATTACHED TO NITROGEN, THE ORGANIC AMINE HAVING A BOILING POINT ABOVE ABOUT 50* C., APPLYING THE SOLUTION OF PHENOLIC RESIN AND ORGANIC AMINE TO THE FIBROUS MATERIAL, DIRECTING JETS OF STEAM OF A TEMPERATURE OF 180* F. AND HIGHER UPON THE UNDRIED FIBROUS MATERIAL TREATED
Claim 2
Dependent Claim
102 words
IN THE PROCESS FOR APPLYING A PARTIALLY REACTED THERMOSETTING PHENOL ALDEHYDE RESIN IN SOLUTION INJ A VOLATILE ORGANIC SOLVENT TO FIBROUS MATERIAL, IN A VOLATILE ORGANIC SOLVENT TO FIBROUS MATETION OF THE PHENOLIC RESIN AN ACCELERATOR COMPRISING FROM 0.1% TO 2% OF THE WEIGHT OF THE RESIN OF A PRIMARY ALIPHATIC ORGANIC AMINE HAVING A METHYLENE GROUP ATTACHED TO NITROGEN, THE ORGANIC AMINE HAVING A BOILING POINT ABOVE ABOUT 50* C., APPLYING THE SOLUTION OF PHENOLIC RESIN AND ORGANIC AMINE TO THE FIBROUS MATERIAL, DIRECTING JETS OF STEAM OF A TEMPERATURE OF 180* F. AND HIGHER UPON THE UNDRIED FIBROUS MATERIAL TREATED
References Cited (Backward Citations)
US738347A
Cited
US954666A
Cited
US1284432A
Cited
US1352436A
Cited
US1458543A
Cited
US1987694A
Cited
US2093651A
Cited
US2088227A
Cited
US2190672A
Cited
US2452005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |