US2903379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing distortion or change of shape in pressure-sensitive adhesive tapes
Assignee: Johnson and Johnson
•
Filing: 1952-06-06
•
Granted: 1959-09-08
•
Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Robert E Norland
- 👤 Nasser John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:30
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/50; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE PROCESS OF PREPARING NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE SHEETS COMPRISING THE STEPS OF COATING A HYDROPHILIC BACKING FILM HAVING A THICKNESS OF FROM ABOUT ONE-HALF TO ABOUT THREE MILS, ON EACH SIDE, ONE COATING BEING A PRIMER COMPOSED OF AN AQUEOUS DISPERSION OF A HYDROPHOBIC RUBBER, AND THE OPPOSED COATING COMPRISING A BALANCING COAT INCLUDING A MAJOR PROPORTION OF WATER, SAID BEING AT LEAST EQUAL IN AMOUNT TO THE AMOUNT OF WATER APPLIED BY SAID PRIMER COATING, AND AMOUNTING TO FROM ABOUT FIVE-HUNDREDTHS OF AN OUNCE TO ABOUT THREE-TENTHS OF AN OUNCE OF WATER PER SQUARE YARD, DRYING SAID COATING AND APPLYING A WATER - INSOLUBLE, NORMALLY TACKY AND PRESSURE-SENTIVE ADHESIVE TO THE SURFACE OF SAID PRIMER COATING AFTER SAID PRIMER COATING HAS BEEN APPLIED, SAID ADHESIVE COMPRISING AN ELASTOMERIC RUBBER BASE AND A TACKIFYING RESIN.
Claim 2
Dependent Claim
137 words
THE PROCESS OF PREPARING NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE SHEETS COMPRISING THE STEPS OF COATING A HYDROPHILIC BACKING FILM HAVING A THICKNESS OF FROM ABOUT ONE-HALF TO ABOUT THREE MILS, ON EACH SIDE, ONE COATING BEING A PRIMER COMPOSED OF AN AQUEOUS DISPERSION OF A HYDROPHOBIC RUBBER, AND THE OPPOSED COATING COMPRISING A BALANCING COAT INCLUDING A MAJOR PROPORTION OF WATER, SAID BEING AT LEAST EQUAL IN AMOUNT TO THE AMOUNT OF WATER APPLIED BY SAID PRIMER COATING, AND AMOUNTING TO FROM ABOUT FIVE-HUNDREDTHS OF AN OUNCE TO ABOUT THREE-TENTHS OF AN OUNCE OF WATER PER SQUARE YARD, DRYING SAID COATING AND APPLYING A WATER - INSOLUBLE, NORMALLY TACKY AND PRESSURE-SENTIVE ADHESIVE TO THE SURFACE OF SAID PRIMER COATING AFTER SAID PRIMER COATING HAS BEEN APPLIED, SAID ADHESIVE COMPRISING AN ELASTOMERIC RUBBER BASE AND A TACKIFYING RESIN.
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |