US2648614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive sheet material
Assignee: Fort James Corp
•
Filing: 1950-10-27
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Granted: 1953-08-11
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Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 John B Martin
- 👤 Chester S Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/201; C09J2301/00; C09J2301/30; C09J2301/302; C09J2400/00; C09J2400/20; C09J2400/28; C09J2400/283; C09J2401/00; C09J2401/005; C09J2421/00; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PRESSURE SENSITIVE ADHESIVE SHEET MATERIAL COMPRISING A FLEXIBLE SHEET BACKING, AN ADHESIVE COATING COMPRISING A NORMALLY TACKY, PRESSURE-SENSITIVE VULCANIZED RUBBER ADHERENTLY AFFIXED TO ONE SIDE OF SAID BACKING AND A RELEASE COATING COMPRISING THE COMBINATION OF CHROMIUM STEARATO CHLORIDE AND HYDROXYETHYL CELLULOSE EMPLOYED IN THE RELATIVE PROPORTIONS OF FROM ABOUT 1 TO ABOUT 3 PARTS BY WEIGHT CHROMIUM STEARATO CHLORIDE FOR EACH 5 PARTS BY WEIGHT HYDROXYETHYL CELLULOSE, SAID RELEASE COATING BEING ADHERENTLY AFFIXED TO THE OTHER SIDE OF SAID BACKING.
Claim 2
Dependent Claim
82 words
THE PRESSURE SENSITIVE ADHESIVE SHEET MATERIAL COMPRISING A FLEXIBLE SHEET BACKING, AN ADHESIVE COATING COMPRISING A NORMALLY TACKY, PRESSURE-SENSITIVE VULCANIZED RUBBER ADHERENTLY AFFIXED TO ONE SIDE OF SAID BACKING AND A RELEASE COATING COMPRISING THE COMBINATION OF CHROMIUM STEARATO CHLORIDE AND HYDROXYETHYL CELLULOSE EMPLOYED IN THE RELATIVE PROPORTIONS OF FROM ABOUT 1 TO ABOUT 3 PARTS BY WEIGHT CHROMIUM STEARATO CHLORIDE FOR EACH 5 PARTS BY WEIGHT HYDROXYETHYL CELLULOSE, SAID RELEASE COATING BEING ADHERENTLY AFFIXED TO THE OTHER SIDE OF SAID BACKING.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |