US3284229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of colored cellulose sponge
Assignee: Mapa Spontex Inc
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Filing: 1962-10-23
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Granted: 1966-11-08
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Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Waddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J2301/00; C08J2301/08; C08J2301/22; C08J2301/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A METHOD OF MAKING COLORED CELLULOSED SPONGE OF IMPROVED BRILLIANCE, THE IMPROVEMENT CONSISTING ESSENTIALLY OF IMPREGNATING COLORED CELLULOSE SPONGE WITH A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF A SPONGE-SOFTENING MATERIAL AND HYDROGEN PEROXIDE UNTIL THE BRILLIANCE OF THE SPONGE IS IMPROVED, SAID LIQUID COMPOSITION HAVING A HYDROGEN PEROXIDE CONTENT, CALCULATED AS 100% H2O2, OF ABOUT 0.004 TO 0.2% BY WEIGHT.
Claim 2
Dependent Claim
60 words
IN A METHOD OF MAKING COLORED CELLULOSED SPONGE OF IMPROVED BRILLIANCE, THE IMPROVEMENT CONSISTING ESSENTIALLY OF IMPREGNATING COLORED CELLULOSE SPONGE WITH A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF A SPONGE-SOFTENING MATERIAL AND HYDROGEN PEROXIDE UNTIL THE BRILLIANCE OF THE SPONGE IS IMPROVED, SAID LIQUID COMPOSITION HAVING A HYDROGEN PEROXIDE CONTENT, CALCULATED AS 100% H2O2, OF ABOUT 0.004 TO 0.2% BY WEIGHT.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |