Patent US2859840A successfully refreshed from Google Patents.
Patent US2635083A successfully refreshed from Google Patents.
US2635083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable thermosetting formaldehyde-amide composition with a butadiene sulfone curing catalyst
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1950-09-29
•
Granted: 1953-04-14
•
Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 David E Cordier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; Y; Y10; Y10S; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A DRY THERMOSETTING COMPOSITION COMPRISING A RESINOUS REACTION PRODUCT OF FORMALDEHYDE WITH A SUBSTANCE WHOSE MOLECULE HAS A PLURALITY OF NH2 GROUPS EACH CONNECTED TO A CARBON ATOM WHICH IN TURN IS CONNECTED BY A DOUBLE BOND TO AN ATOM HAVING AN ATOMIC WEIGHT FROM 14 TO 16 AND WHOSE MOLECULE IS FREE FROM GROUPS THAT INTERFERE WITH THE FORMATION OF A THERMOSETTING REACTION PRODUCT OF FORMALDEHYDE WITH SAID SUBSTANCE,AND AS A CURING CATALYST, A BUTADIENE SULFONE WHEREIN ANY SUBSTITUENTS CONSIST OF FROM ONE TO TWO METHYL GROUPS, ONE OF WHICH IS ATTACHED TO A CARBON ATOM OTHER THAN THOSE CONNECTED TO SULFUR, AND ANY OTHER OF WHICH IS ATTACHED TO A NONADJACENT CARBON ATOM.
Claim 2
Dependent Claim
115 words
A DRY THERMOSETTING COMPOSITION COMPRISING A RESINOUS REACTION PRODUCT OF FORMALDEHYDE WITH A SUBSTANCE WHOSE MOLECULE HAS A PLURALITY OF NH2 GROUPS EACH CONNECTED TO A CARBON ATOM WHICH IN TURN IS CONNECTED BY A DOUBLE BOND TO AN ATOM HAVING AN ATOMIC WEIGHT FROM 14 TO 16 AND WHOSE MOLECULE IS FREE FROM GROUPS THAT INTERFERE WITH THE FORMATION OF A THERMOSETTING REACTION PRODUCT OF FORMALDEHYDE WITH SAID SUBSTANCE,AND AS A CURING CATALYST, A BUTADIENE SULFONE WHEREIN ANY SUBSTITUENTS CONSIST OF FROM ONE TO TWO METHYL GROUPS, ONE OF WHICH IS ATTACHED TO A CARBON ATOM OTHER THAN THOSE CONNECTED TO SULFUR, AND ANY OTHER OF WHICH IS ATTACHED TO A NONADJACENT CARBON ATOM.
References Cited (Backward Citations)
US2410395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |