Patent EP0471364A2 successfully refreshed from Google Patents.
EP0471364A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Homopolymers and copolymers of cyclic esters of salicylic acid
Assignee: Ethicon Inc
•
Filing: 1991-08-14
•
Granted: —
•
Expires: 2011-08-14
Abstract
Abstract Poly(1,4-benzodioxepin-2,5-(3-H)dione), poly(1,4-benzodioxepin-2,5-(3-H, 3-methyl)dione), and copolymers of 1,4-benzodioxepin-2,5-(3-H)dione or 1,4-benzodioxepin-2,5-(3-H, 3-methyl)dione and at least one of: a) glycolide, b) (L-)lactide, c) an alkylene carbonate, d) p-dioxanone, e) e-caprolactone, f) 1,4-dioxepan-2-one, or g) 1,5-dioxepan-2-one. Surgical devices prepared from the polymers and copolymers.
Inventors
- 👤 Shalaby W. Shalaby
- 👤 Donald F. Koelmel
- 👤 Steven Arnold
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; A; A61; A61L; A61L31/00; A61L31/04; A61L31/06; C08G63/02; C08G63/06; C08G63/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
16 words
A homopolymer of a monomer represented by the following formula: wherein R is hydrogen or methyl.
Claim 2
Dependent Claim
9 words
The homopolymer of claim 1 wherein R is hydrogen.
Claim 3
Dependent Claim
22 words
The homopolymer of claim 1 or 2 wherein the inherent viscosity of the homopolymer ranges from about 0.3 to about 1.4 dL/g.
Claim 4
Dependent Claim
24 words
The homopolymer of any of claims 1 to 3 wherein the glass transition temperature of the homopolymer ranges from about 65 to about 80°C.
Claim 5
Dependent Claim
37 words
A copolymer of the monomer represented by the formula of claim 1 and at least one of the following comonomers: a) glycolide, b) (L)-lactide, c) an alkylene carbonate, d) p.dioxanone, e) ε-caprclactone, f) 1,4-dioxepan-2-one, of g) 1,5-dioxepan-2-one.
Claim 6
Dependent Claim
12 words
The copolymer of claim 5 wherein the comonomer is glycolide or L-lactide.
Claim 7
Dependent Claim
10 words
The copolmer of claim 6 wherein the comonomer is glycolide.
Claim 8
Dependent Claim
27 words
The copolymer of claim 7 wherein the amount of the monomer represented by the formula of claim 1 ranges from about 1 to about 35 weight percent.
Claim 9
Dependent Claim
14 words
A surgical device prepared from the homopolymer of any of claims 1 to 4.
Claim 10
Dependent Claim
14 words
A surgical device prepared from the copolymer of any of claims 5 to 8.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.