US2647843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive tape
Assignee: Permacel Tape Corp
•
Filing: 1950-03-29
•
Granted: 1953-08-04
•
Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Cyrus W Bemmels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:21
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/50; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2835; Y10T428/2843; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2883
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
ADHESIVE TAPE COMPRISING A NONFIBROUS, NONMETALLIC, IMPERVIOUS HYDROPHOBIC ORGANIC CELLULOSE ACETATE FILM BACKING; A NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE COATING BASED ON A POLYMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENE POLYMERS, AND VINYL ETHER POLYMERS AND THEIR COPOLYMERS, AND, THEREBETWEEN, A PRIMER COATING IN FILM FORM COMPRISING A THIN LAYER OF A COMPOSITION COMPRISING POLYMERIC CONSTITUENTS, INCLUDING FROM ABOUT TWENTY TO ABOUT EIGHTY PER CENT OF THE POLYMER WEIGHT OF A COPOLYMER COMPRISING FROM ABOUT FIFTEEN TO ABOUT FORTYFIVE PER CENT OF ITS WEIGHT ACRYLONITRILE AND FROM ABOUT FIFTY-FIVE TO ABOUT EIGHTY-FIVE PER CENT OF AT LEAST ONE BUTADIENE, THE REMAINDER OF THE POLYMER PART OF SAID PRIMER BEING PREDOMINANTLY AT LEAST ONE COPOLYMER OF MAJOR PORTIONS OF BUTADIENE AND STYRENE.
Claim 2
Dependent Claim
123 words
ADHESIVE TAPE COMPRISING A NONFIBROUS, NONMETALLIC, IMPERVIOUS HYDROPHOBIC ORGANIC CELLULOSE ACETATE FILM BACKING; A NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE COATING BASED ON A POLYMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENE POLYMERS, AND VINYL ETHER POLYMERS AND THEIR COPOLYMERS, AND, THEREBETWEEN, A PRIMER COATING IN FILM FORM COMPRISING A THIN LAYER OF A COMPOSITION COMPRISING POLYMERIC CONSTITUENTS, INCLUDING FROM ABOUT TWENTY TO ABOUT EIGHTY PER CENT OF THE POLYMER WEIGHT OF A COPOLYMER COMPRISING FROM ABOUT FIFTEEN TO ABOUT FORTYFIVE PER CENT OF ITS WEIGHT ACRYLONITRILE AND FROM ABOUT FIFTY-FIVE TO ABOUT EIGHTY-FIVE PER CENT OF AT LEAST ONE BUTADIENE, THE REMAINDER OF THE POLYMER PART OF SAID PRIMER BEING PREDOMINANTLY AT LEAST ONE COPOLYMER OF MAJOR PORTIONS OF BUTADIENE AND STYRENE.
References Cited (Backward Citations)
US2273880A
Cited
US2491477A
Cited
US2499724A
Cited
US2458166A
Cited
US2487060A
Cited
US2459874A
Cited
US2576148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |