Patent US3578916A successfully refreshed from Google Patents.
US5014361A
Expired / Lapsed
US
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Polyurethane elastic glove having improved puncture and tear resistance
Assignee: AUKLAND MEDICAL PLASTICS Inc
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Filing: 1990-02-15
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Granted: 1991-05-14
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Expires: 2010-02-15
Abstract
Abstract A polyurethane glove having improved tear and puncture resistance is made from the reaction product of an aliphatic diisocyanate, an aliphatic polyether diol having a molecular weight in the range of about 1,000 to about 5,000 and an aliphatic diol containing about 2 to about 6 carbon atoms.
Inventors
- 👤 Norman Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:51
CPC Classifications
A; A61; A61B; A61B42/00; A61B42/10; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4854; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A medical or surgical glove having improved tear and puncture resistance made from a formed thermoplastic polyurethane composition which is the reaction product of an aliphatic diisocyanate, an aliphatic polyether diol having a molecular weight in the range of about 1,000 to about 5,000 and an aliphatic diol containing about 2 to about 6 carbon atoms.
Claim 2
Dependent Claim
56 words
A medical or surgical glove having improved tear and puncture resistance made from a formed thermoplastic polyurethane composition which is the reaction product of an aliphatic diisocyanate, an aliphatic polyether diol having a molecular weight in the range of about 1,000 to about 5,000 and an aliphatic diol containing about 2 to about 6 carbon atoms.
Claim 3
Dependent Claim
41 words
The glove of claim 1 wherein the aliphatic diisocyanate has the formula O═C═N--R--N═C═O where R is a cycloaliphatic radical having 1 to 6 carbon atoms in a methylene bridge connecting 4-cyclohexyl isocyanate moieties and represented by the formula: ##STR2## where n=1-6.
Claim 4
Dependent Claim
14 words
The glove of claim 1 wherein the aliphatic diisocyanate is methylene bis (4-cyclohexyl) isocyanate.
Claim 5
Dependent Claim
22 words
The glove of claim 1 wherein the aliphatic polyether diol has an aliphatic group containing about 4 to about 12 carbon atoms.
Claim 6
Dependent Claim
12 words
The glove of claim 1 wherein the aliphatic diol is 1,4-butane diol.
Claim 7
Dependent Claim
20 words
The glove of claim 1 wherein the polyurethane reaction product has a Shore Hardness of about 70 to about 90.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |