Patent US4649499A successfully refreshed from Google Patents.
Patent US4415628A successfully refreshed from Google Patents.
US4415628A
Expired / Lapsed
US
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Moisture vapor permeable sheet materials
Assignee: Seton Co
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Filing: 1981-10-26
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Granted: 1983-11-15
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Expires: 2001-10-26
Abstract
Abstract A moisture vapor permeable sheet material is comprised of a homogeneous admixture of a synthetic polymer material and a protein derivative. The sheet material is moisture vapor permeable and nonpenetrable by liquid water. The sheet material additionally can have coated thereon a pressure sensitive adhesive which is comprised of a synthetic organic polymer adhesive and a soluble protein derivative in solid solution. Sheet material is formed by providing a homogeneous fluid solution of a soluble protein derivative and a synthetic organic polymer in a solvent. The protein derivative has a pH level compatible with the pH level of the organic polymer. Film is formed from the homogeneous fluid solution and the solvent is removed from the film to form the sheet material which is moisture vapor permeable. When the sheet material includes an adhesive, the adhesive is coated as a fluid solution in a solvent on one side of the sheet material.
Inventors
- 👤 Gheorge Cioca
- 👤 George F. Feeley
- 👤 Joseph B. Brabson
- 👤 Peter Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:29
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; C; C08; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2852; Y10T428/2865; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A moisture vapor permeable sheet material comprising: a homogeneous admixture of a synthetic polymeric material and a protein, said sheet material being moisture vapor permeable and nonpenetrable to liquid water and having a pressure sensitive adhesive coated on one side thereof; said pressure sensitive adhesive being comprised of a synthetic organic polymer adhesive, and said protein being selected from the group consisting of collagen and elastin and derivatives of collagen and elastin.
Claim 2
Dependent Claim
72 words
A moisture vapor permeable sheet material comprising: a homogeneous admixture of a synthetic polymeric material and a protein, said sheet material being moisture vapor permeable and nonpenetrable to liquid water and having a pressure sensitive adhesive coated on one side thereof; said pressure sensitive adhesive being comprised of a synthetic organic polymer adhesive, and said protein being selected from the group consisting of collagen and elastin and derivatives of collagen and elastin.
Claim 3
Dependent Claim
33 words
The sheet material of claim 1 wherein said pressure sensitive adhesive includes a soluble protein derivative, said protein derivative being derived from a member selected from the group consisting of collagen and elastin.
Claim 4
Dependent Claim
16 words
The sheet material of claim 1 wherein said soluble protein derivative is macromolecular biologically active collagen.
Claim 5
Dependent Claim
21 words
The sheet material of claim 1 wherein said pressure sensitive adhesive is present at a thickness of 0.5 to 1.5 mils.
Claim 6
Dependent Claim
13 words
The sheet material of claim 1 wherein said pressure sensitive adhesive is nonmicroporous.
Claim 7
Dependent Claim
16 words
The sheet material of claim 1 wherein said soluble protein derivative is oligopeptides derived from collagen.
Claim 8
Dependent Claim
17 words
The sheet material of claim 6 wherein said oligopeptides have a molecular weight between 5,000 and 20,000.
Claim 9
Dependent Claim
19 words
The sheet material of claim 1 wherein said adhesive has about 1 to 15 percent by weight protein derivative.
Claim 10
Dependent Claim
19 words
The sheet material of claim 8 wherein said adhesive has about 3 to 5 percent by weight protein derivative.
Claim 11
Dependent Claim
22 words
The sheet material of claim 1 having a moisture vapor permeability of at least 300 g/m 2 /24 hours at 40° C.
Claim 12
Dependent Claim
22 words
The sheet material of claim 10 having a moisture vapor permeability of at least 500 g/m 2 /24 hours at 40° C.
References Cited (Backward Citations)
US3121021A
Cited
US3607370A
Cited
US3966580A
Cited
US4046729A
Cited
US4104444A
Cited
US4307717A
Cited
US4171391A
Cited
US4279812A
Cited
US4295894A
Cited
US4285986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |