US3340136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded fibrous products and a method for preparing them
Assignee: Zeneca Inc
•
Filing: 1962-03-09
•
Granted: 1967-09-05
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Burns
- 👤 Sanderson Frank Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:30
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A FIBROUS MAT COMPRISING FIBROUS MATERIAL BOUND TOGETHER BY A MINOR AMOUNT OF A POLYESTER BINDER RESIN WHICH IS SUBSTANTIALLY NO MORE THAN SUFFICIENT TO BIND SAID FIBROUS MATERIAL TOGETHER, SAID MAT BEING SUITABLE FOR LOADING WITH A MOLDING RESIN FOR THE PRODUCTION OF REINFORCED PLASTIC MATERIAL SAID BINDER RESIN BEING THE REACTION PRODUCT OF ISOPHTHALIC ACID, AN UNSATURATED DICARBOXYLIC ACID, A DIHYDRIC ALCOHOL AND FROM ABOUT 0.5 TO ABOUT 10 MOLAR PERCENT OF A POLYHYDRIC ALCOHOL OF FROM 3 TO 6 HYDROXYL GROUPS, REACTED IN AMOUNTS SUCH THAT THE MOLAR RATIO OF CARBOXYL GROUPS TO HYDROXYL GROUPS IS EQUAL TO ABOUT ONE.
Claim 2
Dependent Claim
103 words
A FIBROUS MAT COMPRISING FIBROUS MATERIAL BOUND TOGETHER BY A MINOR AMOUNT OF A POLYESTER BINDER RESIN WHICH IS SUBSTANTIALLY NO MORE THAN SUFFICIENT TO BIND SAID FIBROUS MATERIAL TOGETHER, SAID MAT BEING SUITABLE FOR LOADING WITH A MOLDING RESIN FOR THE PRODUCTION OF REINFORCED PLASTIC MATERIAL SAID BINDER RESIN BEING THE REACTION PRODUCT OF ISOPHTHALIC ACID, AN UNSATURATED DICARBOXYLIC ACID, A DIHYDRIC ALCOHOL AND FROM ABOUT 0.5 TO ABOUT 10 MOLAR PERCENT OF A POLYHYDRIC ALCOHOL OF FROM 3 TO 6 HYDROXYL GROUPS, REACTED IN AMOUNTS SUCH THAT THE MOLAR RATIO OF CARBOXYL GROUPS TO HYDROXYL GROUPS IS EQUAL TO ABOUT ONE.
References Cited (Backward Citations)
US2430868A
Cited
US2758951A
Cited
US2904533A
Cited
US3025266A
Cited
US3047539A
Cited
US3160679A
Cited
US3196131A
Cited
US3063883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |