US3203828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film adhesive consisting of polyvinyl acetal resin and phenol-formalde-hyde resin
Assignee: BASF Schweiz AG
•
Filing: 1962-06-28
•
Granted: 1965-08-31
•
Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Garnish Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
C; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C09J7/00; C09J7/10; C09J7/20; C09J7/22; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L29/00; C08L29/14; C09J2301/00; C09J2301/20; C09J2301/208; C09J2301/30; C09J2301/302; C09J2301/304; C09J2459/00; C09J2461/00; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2874; Y10T428/2878; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A FILM ADHESIVE WHICH COMPRISES A SUBSTRATE IN FILM FORM CONSISTING ESSENTIALLY OF A POLYVINYL ACETAL RESIN AND A PHENOL-FORMALDEHYDE RESIN AND COATED ON AT LEAST ONE SIDE OF SAID SUBSTRATE A LAYER OF A TTACKY SUBSTANCE COMPRISING A MIXTURE OF A PHENOL-FORMALDEHYDE RESOLE RESIN AND A POLYVINYL ACETAL IN A PLASTICIZER, WHEREIN THE WEIGHT RATIO OF PHENOL-FORMALDEHYDE, RESIN TO PLASTICIZER IS FROM ABOUT 2:1 TO 1:2 AND THE WEIGHT OF THE POLYVINYL ACETAL IS FROM ABOUT 1 TO ABOUT 10% OF THE COMBINED WEIGHT OF PHENOL-FOORMALDEHYDE RESIN AND PLASTICIZER.
Claim 2
Dependent Claim
90 words
A FILM ADHESIVE WHICH COMPRISES A SUBSTRATE IN FILM FORM CONSISTING ESSENTIALLY OF A POLYVINYL ACETAL RESIN AND A PHENOL-FORMALDEHYDE RESIN AND COATED ON AT LEAST ONE SIDE OF SAID SUBSTRATE A LAYER OF A TTACKY SUBSTANCE COMPRISING A MIXTURE OF A PHENOL-FORMALDEHYDE RESOLE RESIN AND A POLYVINYL ACETAL IN A PLASTICIZER, WHEREIN THE WEIGHT RATIO OF PHENOL-FORMALDEHYDE, RESIN TO PLASTICIZER IS FROM ABOUT 2:1 TO 1:2 AND THE WEIGHT OF THE POLYVINYL ACETAL IS FROM ABOUT 1 TO ABOUT 10% OF THE COMBINED WEIGHT OF PHENOL-FOORMALDEHYDE RESIN AND PLASTICIZER.
References Cited (Backward Citations)
US2403077A
Cited
US2499134A
Cited
US2411878A
Cited
US2392574A
Cited
US2414474A
Cited
US2566802A
Cited
US2726222A
Cited
US2694028A
Cited
US2872365A
Cited
US2852421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |