US2876165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting powder including salts of carboxymethyl dextran
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1954-08-03
•
Granted: 1959-03-03
•
Expires: 1974-08-03
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/30; A61K47/36; A61K9/00; A61K9/0012; A61K9/0014; Y; Y10; Y10S; Y10S424/00; Y10S424/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A FREE-FLOWING, MOBILE, DUSTING POWDER CONSISTING OF PARTICLES OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF CARBOXYMETHYL DEXTRAN, ALKALINE METAL SALTS OF CARBOXYMETHYL DEXTRAN AND THE AMMONIUM SALT OF CARBOXYMETHYL DEXTRAN AND MIXTURES THEREOF, THE PARTICLES HAVING AN AVERAGE SIZE OF 40 TO 300 MICROUS. 11 A A FREE-FLOWING, HIGHLY MOBILE, MOISTURE ABSORPTIVE DUSTING POWDER CONSISTING OF A BLEND OF FINELY DIVIDED STARCH AND A PARTICULATE MAGNESIUM SALT OF CARBOXYMETHYL DEXTRAN DERIVED FROM NATIVE, UNHYDROLYZED, HIGH MOLECULAR WEIGHT, MICROBIOLOGICALLY PRODUCED DEXTRAN AND CONTAINING AN AVERAGE OF 2.0 TO 3.0 CARBOXYMETHYL GROUPS PER ANHYDROGLUCOPYRANOSIDIC UNIT, THE PARTICLES HAVING AN AVERAGE SIZE OF 40 TO 300 MICRONS.
Claim 2
Dependent Claim
110 words
A FREE-FLOWING, MOBILE, DUSTING POWDER CONSISTING OF PARTICLES OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF CARBOXYMETHYL DEXTRAN, ALKALINE METAL SALTS OF CARBOXYMETHYL DEXTRAN AND THE AMMONIUM SALT OF CARBOXYMETHYL DEXTRAN AND MIXTURES THEREOF, THE PARTICLES HAVING AN AVERAGE SIZE OF 40 TO 300 MICROUS. 11 A A FREE-FLOWING, HIGHLY MOBILE, MOISTURE ABSORPTIVE DUSTING POWDER CONSISTING OF A BLEND OF FINELY DIVIDED STARCH AND A PARTICULATE MAGNESIUM SALT OF CARBOXYMETHYL DEXTRAN DERIVED FROM NATIVE, UNHYDROLYZED, HIGH MOLECULAR WEIGHT, MICROBIOLOGICALLY PRODUCED DEXTRAN AND CONTAINING AN AVERAGE OF 2.0 TO 3.0 CARBOXYMETHYL GROUPS PER ANHYDROGLUCOPYRANOSIDIC UNIT, THE PARTICLES HAVING AN AVERAGE SIZE OF 40 TO 300 MICRONS.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |