US3098869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of dialdehyde polysaccharide addition products
Assignee: Bayer Corp
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Filing: 1960-07-07
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Granted: 1963-07-23
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Expires: 1980-07-07
Abstract
No abstract record available.
Inventors
- 👤 Peter J Borchert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:33
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/18; C08B31/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A PROCESS FOR THE PREPARATION OF BISULFITE ADDITION COMPUNDS OF DIALDEHYDE POLYSACCHARIDES WHICH COMPRISES REACTING A DIALDEHYDE POLYSACCHARIDE WITH A WATER SOLUBLE BISULFITE SALT IN SLURRY IN A REACTION MEDIUM CONSISTING OF A MIXTURE OF A LOWER ALIPHATIC ALCOHOL AND WATER AND RECOVERING THE DIALDEHYDE POLYSACCHARIDE BISULFITE THEREBY OBTAINED.
Claim 2
Dependent Claim
49 words
A PROCESS FOR THE PREPARATION OF BISULFITE ADDITION COMPUNDS OF DIALDEHYDE POLYSACCHARIDES WHICH COMPRISES REACTING A DIALDEHYDE POLYSACCHARIDE WITH A WATER SOLUBLE BISULFITE SALT IN SLURRY IN A REACTION MEDIUM CONSISTING OF A MIXTURE OF A LOWER ALIPHATIC ALCOHOL AND WATER AND RECOVERING THE DIALDEHYDE POLYSACCHARIDE BISULFITE THEREBY OBTAINED.
Claim 3
Dependent Claim
13 words
A PROCESS ACCORDING TO CALIM 1 WHEREIN THE DIALDEHYDE POLYSACCHARIDE IS DIALDEHYDE STARCH.
Claim 4
Dependent Claim
13 words
A PROCESS ACCORDING TO CALIM 1 WHEREIN THE DIALDEHYDE POLYSACCHARIDE IS DIALDEHYDE STARCH.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |