Patent US3138533A successfully refreshed from Google Patents.
US3138533A
Expired / Lapsed
US
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Sanitary tissues
Assignee: Individual
•
Filing: 1958-05-27
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Granted: 1964-06-23
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Expires: 1978-05-27
Abstract
No abstract record available.
Inventors
- 👤 Leo J Heim
- 👤 Raymond J Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:50
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A; A61; A61K; A61K8/00; A61K8/02; A61K8/0208; A61Q; A61Q17/00; A61Q17/005; A61Q19/00; A61Q15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN ABSORBENT SANITARY AND FACIAL TISSUE CHARACTERIZED BY INHERENT ANTIIMICROBIAL AND EMOLLIENT ACTION ON APPLICATION OF THE TISSUE TO MOISTENED TOPICAL AREAS WHICH COMPRISES A HYDROPHLIC, ABSORPTIVE, POROUS SHEET OF NEGATIVELY CHARGED CELLULOSE FIBERS IN AND THROUGH WHICH IS HOMOGENEOUSLY INCORPORATED A GERMICIDALLY EFFECTIVE AMOUNT OF A CATONIC QUATERNARY AMINE AND AN AMOUNT OF UREA SUFFICIENT TO SUBSTANTIALLY REDUCE THE SUBSTANTIVITY OF THE CATIONIC AMINE TO THE CELLULOSE FIBERS, THE QUANTITY OF THE AMINE BEING SUFFICIENT TO GIVE A CONCENTRATION OF FROM 150 TO 2,000 PARTS PER MILLION IN WATER SUFFICIENT TO SATURATE THE TISSUE AND THE QUANTITY OF UREA BEING AT LEAST ONE-THIRD THE QUANTITY OF THE AMINE.
Claim 2
Dependent Claim
109 words
AN ABSORBENT SANITARY AND FACIAL TISSUE CHARACTERIZED BY INHERENT ANTIIMICROBIAL AND EMOLLIENT ACTION ON APPLICATION OF THE TISSUE TO MOISTENED TOPICAL AREAS WHICH COMPRISES A HYDROPHLIC, ABSORPTIVE, POROUS SHEET OF NEGATIVELY CHARGED CELLULOSE FIBERS IN AND THROUGH WHICH IS HOMOGENEOUSLY INCORPORATED A GERMICIDALLY EFFECTIVE AMOUNT OF A CATONIC QUATERNARY AMINE AND AN AMOUNT OF UREA SUFFICIENT TO SUBSTANTIALLY REDUCE THE SUBSTANTIVITY OF THE CATIONIC AMINE TO THE CELLULOSE FIBERS, THE QUANTITY OF THE AMINE BEING SUFFICIENT TO GIVE A CONCENTRATION OF FROM 150 TO 2,000 PARTS PER MILLION IN WATER SUFFICIENT TO SATURATE THE TISSUE AND THE QUANTITY OF UREA BEING AT LEAST ONE-THIRD THE QUANTITY OF THE AMINE.
References Cited (Backward Citations)
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US2544732A
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |