US2882183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone pressure-sensitive adhesive tape
Assignee: 3M Co
•
Filing: 1956-05-21
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Granted: 1959-04-14
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Expires: 1976-05-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Bond
- 👤 Gaylord L Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:04
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/201; C09J7/22; C09J7/30; C09J7/38; C09J2421/00; C09J2421/006; C09J2483/00; C09J2483/005; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/2852; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2754
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A STABLE PRESSURE-SENSITIVE SILICONE ADHESIVE SHEET MATERIAL, THE PRESSURE-SENSITIVE ADHESIVE SURFACE OF WHICH RETAINS ITS PRESSURE-SENSITIVE ADHESIVE PROPERTIES AFTER PROLONGED STORAGE IN DIRECT CONTACT WITH THE BACK SURFACE OF SAID SHEET MATERIAL, SAID SHEET MATERIAL COMPRISING A BACKING INCLUDING A LAYER OF A FLEXIBLE SILICONE ELASTOMER, A PRESSURE-SENSITIVE SILICONE ADHESIVE FIRMLY ADHERENTLY BONDED TO ONE SIDE OF SAID BACKING, AND A NON-TACKY BARRIER BACKSIZE FILM FIRMLY ADHERENTLY BONDED TO THE OTHER SIDE OF SAID BACKING, SAID BACKSIZE FILM COMPRISING AN IN SITU HEAT-CURED MIXTURE OF COMPONENTS COMPRISING A SILICONE RESIN AND A CATALYTIC CURING AGENT WHICH PROMOTES POLYMERIZATION OF SAID RESIN THROUGH SILCON BONDED HYDROXYL GROUPS THEREOF, SAID SILCONE RESIN BEING AN ORGANOPOLYSILIXANE IN WHICH THE RATIO OF MONOVALENT ORGANIC RADICALS TO SILICON ATOMS IS BETWEEN 1:1 AND 1.8:1, THE WEIGHT PERCENT OF SILICON BONDED HYDROCYL GROUPS IS AT LEAST 0.01, AND THE WEIGHT PERCENT OF R2SIO5 GROUPS, WHERE R IS AN ORGANIC RADICAL, IS LESS THAN 10.
Claim 2
Dependent Claim
158 words
A STABLE PRESSURE-SENSITIVE SILICONE ADHESIVE SHEET MATERIAL, THE PRESSURE-SENSITIVE ADHESIVE SURFACE OF WHICH RETAINS ITS PRESSURE-SENSITIVE ADHESIVE PROPERTIES AFTER PROLONGED STORAGE IN DIRECT CONTACT WITH THE BACK SURFACE OF SAID SHEET MATERIAL, SAID SHEET MATERIAL COMPRISING A BACKING INCLUDING A LAYER OF A FLEXIBLE SILICONE ELASTOMER, A PRESSURE-SENSITIVE SILICONE ADHESIVE FIRMLY ADHERENTLY BONDED TO ONE SIDE OF SAID BACKING, AND A NON-TACKY BARRIER BACKSIZE FILM FIRMLY ADHERENTLY BONDED TO THE OTHER SIDE OF SAID BACKING, SAID BACKSIZE FILM COMPRISING AN IN SITU HEAT-CURED MIXTURE OF COMPONENTS COMPRISING A SILICONE RESIN AND A CATALYTIC CURING AGENT WHICH PROMOTES POLYMERIZATION OF SAID RESIN THROUGH SILCON BONDED HYDROXYL GROUPS THEREOF, SAID SILCONE RESIN BEING AN ORGANOPOLYSILIXANE IN WHICH THE RATIO OF MONOVALENT ORGANIC RADICALS TO SILICON ATOMS IS BETWEEN 1:1 AND 1.8:1, THE WEIGHT PERCENT OF SILICON BONDED HYDROCYL GROUPS IS AT LEAST 0.01, AND THE WEIGHT PERCENT OF R2SIO5 GROUPS, WHERE R IS AN ORGANIC RADICAL, IS LESS THAN 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |