US2880105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dextran containing sizing composition
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1955-09-02
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Granted: 1959-03-31
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Expires: 1975-09-02
Abstract
No abstract record available.
Inventors
- 👤 Malvern J Hiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:57
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A SIZING COMPOSITION CONSISTING OF A 5% AQUEOUS SOLUTION OF UNHYDROLYZED DEXTRAN HAVING A MOLECULAR WEIGHT RANGING FROM 20,000 TO 200,000, A 50% AQUEOUS SOLUTION OF DECYLOXYMETHYL DIMETHYL B-METHYL-B-FORMYL PROPYL AMMONIUM CHLORIDE. THE LATTER SOLUTION BEING ADDED TO THE UNHYDROLYZED DEXTRAN SOLUTION IN THE PROPORTIONATE AMOUNTS OF ONE PART TO FIVE PARTS BY WEIGHT, RESPECTIVELY.
Claim 2
Dependent Claim
55 words
A SIZING COMPOSITION CONSISTING OF A 5% AQUEOUS SOLUTION OF UNHYDROLYZED DEXTRAN HAVING A MOLECULAR WEIGHT RANGING FROM 20,000 TO 200,000, A 50% AQUEOUS SOLUTION OF DECYLOXYMETHYL DIMETHYL B-METHYL-B-FORMYL PROPYL AMMONIUM CHLORIDE. THE LATTER SOLUTION BEING ADDED TO THE UNHYDROLYZED DEXTRAN SOLUTION IN THE PROPORTIONATE AMOUNTS OF ONE PART TO FIVE PARTS BY WEIGHT, RESPECTIVELY.
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |