Patent US2767090A successfully refreshed from Google Patents.
US2767090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process and product
Assignee: Dow Chemical Co
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Filing: 1954-06-04
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Granted: 1956-10-16
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Expires: 1974-06-04
Abstract
No abstract record available.
Inventors
- 👤 Isaac R Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:27
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/51; D21H17/63; D21H17/66; D21H23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF MANUFACTURING INTERNALLY BONDED FIBROUS WEBS WHICH COMPRISES FORMING A DISPERSION CONTAINING FIBERS SUITABLE FOR SHEETING BY CONVENTIONAL WEB FORMING PROCEDURES, PARTICLES OF NON-FIBROUS MATERIAL CAPABLE OF BONDING SAID FIBERS UPON DEPOSITION OF SAID MATERIAL ON SAID FIBERS AND THE FORMATION OF A WEB THEREOF, AND A COMPOSITION EFFECTING COAGULATION OF SAID NONFIBROUS MATERIAL ON SAID FIBERS, AND COMPOSITION COMPRISING A MIXTURE OF A POLY-N-BASIC WATER SOLUBLE POLYMER AND A WATER SOLUBLE SALT OF A BIVALENT METALLIC ION, AND FORMING AN INTERNALLY BONDED FIBROUS WEB OF SAID FIBERS AND BONDING PARTICLES BY SHEETING THE DISPERSION.
Claim 2
Independent Claim
97 words
THE METHOD OF MANUFACTURING INTERNALLY BONDED FIBROUS WEBS WHICH COMPRISES FORMING A DISPERSION CONTAINING FIBERS SUITABLE FOR SHEETING BY CONVENTIONAL WEB FORMING PROCEDURES, PARTICLES OF NON-FIBROUS MATERIAL CAPABLE OF BONDING SAID FIBERS UPON DEPOSITION OF SAID MATERIAL ON SAID FIBERS AND THE FORMATION OF A WEB THEREOF, AND A COMPOSITION EFFECTING COAGULATION OF SAID NONFIBROUS MATERIAL ON SAID FIBERS, AND COMPOSITION COMPRISING A MIXTURE OF A POLY-N-BASIC WATER SOLUBLE POLYMER AND A WATER SOLUBLE SALT OF A BIVALENT METALLIC ION, AND FORMING AN INTERNALLY BONDED FIBROUS WEB OF SAID FIBERS AND BONDING PARTICLES BY SHEETING THE DISPERSION.
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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |