US3455714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose derivatives of improved dispersibility and process
Assignee: Hercules LLC
•
Filing: 1964-09-01
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Granted: 1969-07-15
•
Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robert G Bishop
- 👤 Armand J Desmarais
- 👤 Albert R Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
C; C08; C08B; C08B37/00; C08L; C08L1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AS A NEW COMPOSITION OF MATTER, A WATER-SOLUBLE GUM OF IMPROVED WATER DISPERSIBILITY HAVING A POLYMERIC WATER-SOLUBLE AND ORGANO-SOLUBLE COATING THEREON OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROXYPROPYL CELLULOSE, HYDROXYETHYL HYDROXYPROPYL CELLULOSE, HYDROXYPROPYL CELLULOSE HAVING IONIC SUBSTITUENT, HYDROXYPROPYL CELLULOSE HAVING ADDITIONAL NONIONIC SUBSTITUENT, CELLULOSE ESTERS, AND MIXED CELLULOSE ESTERS.
Claim 2
Dependent Claim
52 words
AS A NEW COMPOSITION OF MATTER, A WATER-SOLUBLE GUM OF IMPROVED WATER DISPERSIBILITY HAVING A POLYMERIC WATER-SOLUBLE AND ORGANO-SOLUBLE COATING THEREON OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROXYPROPYL CELLULOSE, HYDROXYETHYL HYDROXYPROPYL CELLULOSE, HYDROXYPROPYL CELLULOSE HAVING IONIC SUBSTITUENT, HYDROXYPROPYL CELLULOSE HAVING ADDITIONAL NONIONIC SUBSTITUENT, CELLULOSE ESTERS, AND MIXED CELLULOSE ESTERS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |