US2976178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gummed paper
Assignee: 3M Co
•
Filing: 1957-04-22
•
Granted: 1961-03-21
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Walter H Pahl
- 👤 Willis A Sandholtz
- 👤 Nicholas R Elerts
- 👤 Richard E Goggin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:42
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/32; C09J7/20; C09J7/21; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T428/2852; Y10T428/2865; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A FLEXIBLE GUMMED SHEET PRODUCT EXHIBITING HIGH ADHESIVE STRENGTH AND COMPRISING A FLEXIBLE FIBROUS SHEET BACKING MEMBER AND NORMALLY NON-TACKY GUMMED COATING THEREON, THE DRY COATING WEIGHT OF SAID COATING BEING FROM 5 TO 15 POUNDS PER REAM, SAID COATING BEING RAPIDLY ACTIVATED TO TACKINESS BY WATER-MOISTENING AND COMPRISING BY WEIGHT UP TO 95% OF HIGH SOLUBILITY DEXTRINE (A) EXHIBITING A VISCOSITY BELOW 50 CENTIPOISES BROOKFIELD AT 180*F. AND 30% SOLIDS CONCENTRATION IN EATER, AND (B) EXHIBITIN A SOLUBILITY OF AT LEAST 90% IN WATER AT 77*F., AND BETWEEN 5 TO 40% OF WATER-SOLBUBLE ARYLCYL POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYARYLIC ACID AND POLYARYLOAMIDE, SAID DEXTRINE AND ACRYLYL POLYMER BEING UNIFORMLY BLENDED IN SAID GUMMED COATING.
Claim 2
Dependent Claim
118 words
A FLEXIBLE GUMMED SHEET PRODUCT EXHIBITING HIGH ADHESIVE STRENGTH AND COMPRISING A FLEXIBLE FIBROUS SHEET BACKING MEMBER AND NORMALLY NON-TACKY GUMMED COATING THEREON, THE DRY COATING WEIGHT OF SAID COATING BEING FROM 5 TO 15 POUNDS PER REAM, SAID COATING BEING RAPIDLY ACTIVATED TO TACKINESS BY WATER-MOISTENING AND COMPRISING BY WEIGHT UP TO 95% OF HIGH SOLUBILITY DEXTRINE (A) EXHIBITING A VISCOSITY BELOW 50 CENTIPOISES BROOKFIELD AT 180*F. AND 30% SOLIDS CONCENTRATION IN EATER, AND (B) EXHIBITIN A SOLUBILITY OF AT LEAST 90% IN WATER AT 77*F., AND BETWEEN 5 TO 40% OF WATER-SOLBUBLE ARYLCYL POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYARYLIC ACID AND POLYARYLOAMIDE, SAID DEXTRINE AND ACRYLYL POLYMER BEING UNIFORMLY BLENDED IN SAID GUMMED COATING.
References Cited (Backward Citations)
US2183736A
Cited
US2220987A
Cited
US2317328A
Cited
US2365020A
Cited
US2791512A
Cited
US2808381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |