US3992147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for sterilizing psyllium seed husk using aqueous isopropanol
Assignee: GD Searle LLC
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Filing: 1975-11-14
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Granted: 1976-11-16
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Expires: 1995-11-14
Abstract
Abstract The present invention is concerned with a method for sterilizing psyllium seed husk without substantial swelling of the psyllium seed husk comprising contacting for 5 minutes or more said psyllium seed husk with a 15°-50° C solution of 0.2-10% by weight hydrogen peroxide in a solvent having 2-50 parts by volume water and 50-98 parts by volume isopropanol.
Inventors
- 👤 John W. Christian
- 👤 Jerry J. Renbarger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:41
CPC Classifications
A; A23; A23B; A23B9/00; A23B9/16; A23B9/24; A23B9/30; A23B9/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
52 words
A method for sterilizing psyllium seed husk without substantial swelling of the psyllium seed husk comprising contacting for 5 minutes or more said psyllium seed husk with a 15°-50° C solution of 0.2-10% by weight hydrogen peroxide in a solvent having 2-50 parts by volume water and 50-98 parts by volume isopropanol.
Claim 2
Independent Claim
52 words
A method for sterilizing psyllium seed husk without substantial swelling of the psyllium seed husk comprising contacting for 5 minutes or more said psyllium seed husk with a 15°-50° C solution of 0.2-10% by weight hydrogen peroxide in a solvent having 2-50 parts by volume water and 50-98 parts by volume isopropanol.
Claim 3
Dependent Claim
48 words
A process for sterilizing psyllium seed husk as in claim 1, comprising contacting for 5 minutes or more said psyllium seed husk with a 15°-50° C solution containing 0.5-10% hydrogen peroxide in a solvent having about 2-20 parts by weight water and about 80-98 parts by weight isopropanol.
References Cited (Backward Citations)
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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) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |