US3098786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper making process
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-12-28
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Granted: 1963-07-23
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 James R Biles
- 👤 Richard R Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:49
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/1254; D21H13/00; D21H13/10; D21H13/12; D21H13/18; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A PROCESS FOR MAKING PAPER FROM AN AQUEOUS SUSPENSION OF WET-SPUN ACRYLIC FIBERS, THE STEP WHICH COMPRISES FIRST ADDING, TO SAID SUSPENSION AFTER ALL OPERATIONS DESIGNED TO MODIFY THE FIBROUS CONSTITUENTS BY MECHANICAL MEANS ARE COMPLETED AND PRIOR TO THE FORMATION OF THE PAPER WEB, FROM 3 TO 20 PERCENT OF DEACETYLATED KARAYA GUM AND THEREAFTER SLOWLY ADDING AS A FURTHER COMPONENT FROM 4 TO 10 PERCENT OF SULFURIC ACID, ALL PERCENTAGES BEING BASED ON THE WEIGHT OF THE FIBERS PERCENT IN SAID AQUEOUS SUSPENSION, AND FINALLY PASSING SAID AQUEOUS SUSPENSION TO A PAPER WEB FORMING DEVICE.
Claim 2
Dependent Claim
98 words
IN A PROCESS FOR MAKING PAPER FROM AN AQUEOUS SUSPENSION OF WET-SPUN ACRYLIC FIBERS, THE STEP WHICH COMPRISES FIRST ADDING, TO SAID SUSPENSION AFTER ALL OPERATIONS DESIGNED TO MODIFY THE FIBROUS CONSTITUENTS BY MECHANICAL MEANS ARE COMPLETED AND PRIOR TO THE FORMATION OF THE PAPER WEB, FROM 3 TO 20 PERCENT OF DEACETYLATED KARAYA GUM AND THEREAFTER SLOWLY ADDING AS A FURTHER COMPONENT FROM 4 TO 10 PERCENT OF SULFURIC ACID, ALL PERCENTAGES BEING BASED ON THE WEIGHT OF THE FIBERS PERCENT IN SAID AQUEOUS SUSPENSION, AND FINALLY PASSING SAID AQUEOUS SUSPENSION TO A PAPER WEB FORMING DEVICE.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |