US3143434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing perforated adhesive material
Assignee: Scholl Manufacturing Co Inc
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Filing: 1956-02-20
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Granted: 1964-08-04
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Tennant Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:36
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/0276; A61F13/0283; Y; Y10; Y10S; Y10S602/00; Y10S602/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
THE METHOD OF MAKING ADHESIVE MATERIAL WITH THE AID OF A ROLL HAVING NUMEROUS SPACED PROJECTIONS ON THE SURFACE THEREOF, INCLUDING THE STEPS OF FEEDING A WEB OF BACKING MATERIAL OVER SAID ROLL, APPLYING ADHESIVE TO SAID WEB, CONTEMPORANEOUSLY DOCTORING THE APPLIED ADHESIVE ONTO SAID WEB IN LOCATIONS CORRESPONDING TO THE VALLEYS BETWEEN PROJECTIONS ON THE ROLL AND ABRADING THE WEB OVER SAID PROJECTIONS TO PROVIDE IN THE WEB NUMEROUS APERTURES OF SUCH SIZE AS TO RENDER THE FINISHED MATERIAL VAPOR POROUS BUT SUBSTANTIALLY LIQUID IMPERVIOUS IN NORMAL USE OF THE MATERIAL.
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |