US3057745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose sponge
Assignee: EIDP Inc
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Filing: 1960-08-30
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Granted: 1962-10-09
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Expires: 1980-08-30
Abstract
No abstract record available.
Inventors
- 👤 Meador Harold Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J2301/00; Y; Y10; Y10S; Y10S106/00; Y10S106/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PRODUCT CONSISTING ESSENTIALLY OF A COMPRESSIBLE PIGMENTED REGENERATED CELLULOSE SPONGE HAVING DISPERSED THROUGHOUT AN AMOUNT UP TO ABOUT 5.0% BY WEIGHT OF PIGMENT PARTICLES, SAID AMOUNT BEING EFFECTIVE TO IMPART COLOR TO SAID SPONGE, FROM ABOUT 0.10% TO ABOUT 10.0% BY WEIGHT OF WATER INSOLUBLE FILM FORMING MATERIAL AS A BINDER FOR SAID PIGMENT PARTICLES, SAID FILM FORMING MATERIAL BEING A MEMBER OF THE CLASS CONSISTING OF (A) A TERPOLYMER OF EHTYL ACRYLATE, METHYL ACRYLATE AND METHACRYLIC ACID, (B) CHLOROSULFONATED POLYETHYLENE; (C) A POLYMER OF BUTADIENE AND STYRENE, (D) POLYSULFIDE RUBBER, (E) UREA-FORMALDEHYDE RESIN, (F) MELAMINE-FORMALDEHYDE RESIN, (G) POLYAMIDE RESIN, AND (H) NATURAL RUBBER, SAID PERCENTAGES BEING BASED ON THE WEIGHT OF CELLULOSE IN SAID SPONGE, SAID PIGMENTED CELLULOSE SPONGE BEING CHARACTERIZED BY AT LEAST A 45% REDUCTION IN COLOR BLEEDING AS COMPARED TO A COMPARABLE PIGMENTED CELLULOSE SPONGE EXCEPT FOR THE PRESENCE OF SAID FILM FORMING MATERIAL.
Claim 2
Dependent Claim
149 words
A PRODUCT CONSISTING ESSENTIALLY OF A COMPRESSIBLE PIGMENTED REGENERATED CELLULOSE SPONGE HAVING DISPERSED THROUGHOUT AN AMOUNT UP TO ABOUT 5.0% BY WEIGHT OF PIGMENT PARTICLES, SAID AMOUNT BEING EFFECTIVE TO IMPART COLOR TO SAID SPONGE, FROM ABOUT 0.10% TO ABOUT 10.0% BY WEIGHT OF WATER INSOLUBLE FILM FORMING MATERIAL AS A BINDER FOR SAID PIGMENT PARTICLES, SAID FILM FORMING MATERIAL BEING A MEMBER OF THE CLASS CONSISTING OF (A) A TERPOLYMER OF EHTYL ACRYLATE, METHYL ACRYLATE AND METHACRYLIC ACID, (B) CHLOROSULFONATED POLYETHYLENE; (C) A POLYMER OF BUTADIENE AND STYRENE, (D) POLYSULFIDE RUBBER, (E) UREA-FORMALDEHYDE RESIN, (F) MELAMINE-FORMALDEHYDE RESIN, (G) POLYAMIDE RESIN, AND (H) NATURAL RUBBER, SAID PERCENTAGES BEING BASED ON THE WEIGHT OF CELLULOSE IN SAID SPONGE, SAID PIGMENTED CELLULOSE SPONGE BEING CHARACTERIZED BY AT LEAST A 45% REDUCTION IN COLOR BLEEDING AS COMPARED TO A COMPARABLE PIGMENTED CELLULOSE SPONGE EXCEPT FOR THE PRESENCE OF SAID FILM FORMING MATERIAL.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |