US3227019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing air permeability of films or sheets
Assignee: Olin Corp
•
Filing: 1964-01-24
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Granted: 1966-01-04
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Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Milton O Schur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:19
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0481; Y10T83/0591; Y10T83/364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF INCREASING THE POROSITY OF CIGARETTE PAPER BY FORMING SPACED MICROSPOIC OPENINGS IN SAID PAPER WHILE SUBSTANTIALLY MAINTAINING THE INITIAL TENSILE STRENGTH AND BURNING RATE OF SAID PAPER INCLUDING THE STEPS OF: CONTINUOUSLY ADVANCING A WEB OF CIGARETTE PAPER OVER AND INTO ENGAGEMENT WITH A BACKING MEMBER, FEEDING SOLID PARTICLES INTO A PLURALITY OF JET TUBES, PROPELLING SAID SOLID PARTICLES THROUGH SAID JET TUBES BY MEANS OF A FLUID UNDER PRESSURE AGAINST THE
Claim 2
Independent Claim
75 words
A METHOD OF INCREASING THE POROSITY OF CIGARETTE PAPER BY FORMING SPACED MICROSPOIC OPENINGS IN SAID PAPER WHILE SUBSTANTIALLY MAINTAINING THE INITIAL TENSILE STRENGTH AND BURNING RATE OF SAID PAPER INCLUDING THE STEPS OF: CONTINUOUSLY ADVANCING A WEB OF CIGARETTE PAPER OVER AND INTO ENGAGEMENT WITH A BACKING MEMBER, FEEDING SOLID PARTICLES INTO A PLURALITY OF JET TUBES, PROPELLING SAID SOLID PARTICLES THROUGH SAID JET TUBES BY MEANS OF A FLUID UNDER PRESSURE AGAINST THE
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |