Patent US4773902A successfully refreshed from Google Patents.
US4773902A
Expired / Lapsed
US
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Oxidized cellulose as a medical lubricant
Assignee: Deseret Medical Inc
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Filing: 1985-05-16
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Granted: 1988-09-27
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Expires: 2005-05-16
Abstract
Abstract The use of oxidized cellulose as a medical lubricant is disclosed wherein oxidized cellulose is employed as a mold release agent or a donning powder in the manufacture of surgical gloves as well as in other applications; medical devices and, particularly, a surgical glove, are provided having finely divided oxidized cellulose powder on the surface in a lubricity imparting coverage.
Inventors
- 👤 David J. Lentz
- 👤 Mohammad A. Khan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:38
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/042; A61L31/08; A61L31/10; A41; A41D; A41D19/00; A41D19/0055; A41D19/0058; A41D19/0062
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
In a process for manufacturing surgical gloves which comprises applying a mold release agent to a glove form and immersing said form in a film-forming composition of a resin, and forming a dried and cured film on said form, the improvement which comprises applying oxidized cellulose to the glove form as a mold release agent wherein said oxidized cellulose has a carboxyl content of approximately 8-18% by weight.
Claim 2
Dependent Claim
68 words
In a process for manufacturing surgical gloves which comprises applying a mold release agent to a glove form and immersing said form in a film-forming composition of a resin, and forming a dried and cured film on said form, the improvement which comprises applying oxidized cellulose to the glove form as a mold release agent wherein said oxidized cellulose has a carboxyl content of approximately 8-18% by weight.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said oxidized cellulose has a particle size of about 4 to 60 microns.
Claim 4
Dependent Claim
22 words
The process of claim 2 wherein said oxidized cellulose provides a pH of about 1.0 to 3.5 in a 1% aqueous solution.
Claim 5
Dependent Claim
19 words
The process of claim 2 wherein said oxidized cellulose is prepared by reacting cellulose with an oxide of nitrogen.
Claim 6
Dependent Claim
17 words
The process of claim 3 wherein said oxidized cellulose is prepared by reacting cellulose with a periodate
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) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |