US3300474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sucrose ether copolymerizates
Assignee: Pfizer Health AB
•
Filing: 1964-02-12
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Granted: 1967-01-24
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Expires: 1984-02-12
Abstract
No abstract record available.
Inventors
- 👤 Flodin Per Gustaf Magnus
- 👤 Ingelman Bjorn Gustaf-Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:10
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN AGENT FOR MAKING AQUEOUS COLLOID SOLUTIONS OF HIGH DENSITY AND LOW VISCOSITY CONSISTING OF A COPOLYMERIZATE BUILT UP OF SUCROSE RESIDUES BONDED TOGETHER BY ETHER BRIDGES OF THE GENERAL TYPE -S-O-R-O-S-. WHEREIN THE SYMBOLS S EACH REPRESENT A SUCROSE RESIDUE AND R IS AN ALKYL RADICAL, CONTAINING FROM 3 TO 10, INCLUSIVE, CARBON ATOMS, THE AVERAGE MOLECULAR WEIGHT (MW) OF SAID COPOLYMERIZATE BEING IN THE RANGE OF FROM 5,000 TO 1,000,000.
Claim 2
Dependent Claim
72 words
AN AGENT FOR MAKING AQUEOUS COLLOID SOLUTIONS OF HIGH DENSITY AND LOW VISCOSITY CONSISTING OF A COPOLYMERIZATE BUILT UP OF SUCROSE RESIDUES BONDED TOGETHER BY ETHER BRIDGES OF THE GENERAL TYPE -S-O-R-O-S-. WHEREIN THE SYMBOLS S EACH REPRESENT A SUCROSE RESIDUE AND R IS AN ALKYL RADICAL, CONTAINING FROM 3 TO 10, INCLUSIVE, CARBON ATOMS, THE AVERAGE MOLECULAR WEIGHT (MW) OF SAID COPOLYMERIZATE BEING IN THE RANGE OF FROM 5,000 TO 1,000,000.
References Cited (Backward Citations)
US2585035A
Cited
US3042666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |