US3266973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing adsorbent filter paper containing crystalline zeolite particles, and paper thereof
Assignee: Individual
•
Filing: 1963-07-25
•
Granted: 1966-08-16
•
Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Richard P Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/68; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; Y; Y10; Y10S; Y10S55/00; Y10S55/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN THE METHOD OF PREPARING PAPER STOCK CHARACTERIZED BY AN AFFINITY FOR MOLECULAR MATERIALS WHICH METHOD INCLUDES: THE STEPS OF PREPARING AN AQUEOUS SLURRY OF PULP; FORMING A SHEET FROM THE PULP; AND DRYING THE SHEET, THE IMPROVEMENT WHICH COMPRISES: ADDING TO THE PULP FINELY DIVIDED ZEOLITE CRYSTALLINE MOLECULAR SIEVE PARTICLES IN AN AMOUNT OF FROM ABOUT 5 TO 300 PERCENT BY WEIGHT BASED ON THE DRY WEIGHT OF THE PULP. 11.. A CELLULOSIC PAPER PRODUCT WHICH INCLUDES A NONWOVEN MATRIX OF DRIED CELLULOSIC PAPER PULP CONTAINING DISPERED THEREIN FROM THE ABOUT 5 TO 300 PERCENT BY WEIGHTING BASED ON THE DRY WEIGHT OF THE PULP OF FINELY DIVIDED, ZEOLITE CRYSTALLINE MOLECULAR SIEVE PARTICLES.
Claim 2
Dependent Claim
114 words
IN THE METHOD OF PREPARING PAPER STOCK CHARACTERIZED BY AN AFFINITY FOR MOLECULAR MATERIALS WHICH METHOD INCLUDES: THE STEPS OF PREPARING AN AQUEOUS SLURRY OF PULP; FORMING A SHEET FROM THE PULP; AND DRYING THE SHEET, THE IMPROVEMENT WHICH COMPRISES: ADDING TO THE PULP FINELY DIVIDED ZEOLITE CRYSTALLINE MOLECULAR SIEVE PARTICLES IN AN AMOUNT OF FROM ABOUT 5 TO 300 PERCENT BY WEIGHT BASED ON THE DRY WEIGHT OF THE PULP. 11.. A CELLULOSIC PAPER PRODUCT WHICH INCLUDES A NONWOVEN MATRIX OF DRIED CELLULOSIC PAPER PULP CONTAINING DISPERED THEREIN FROM THE ABOUT 5 TO 300 PERCENT BY WEIGHTING BASED ON THE DRY WEIGHT OF THE PULP OF FINELY DIVIDED, ZEOLITE CRYSTALLINE MOLECULAR SIEVE PARTICLES.
References Cited (Backward Citations)
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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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |