US4787905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gel for breast prosthesis
Assignee: NEARLY ME TECHNOLOGIES Inc
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Filing: 1987-07-24
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Granted: 1988-11-29
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Expires: 2007-07-24
Abstract
Abstract The invention relates to a method of producing a new and novel gel composition suitable for use in breast prostheses, including a mixture of hydroxyl terminated polybutadiene resin, diundecyl phthalate, polymethylene polyphenyl isocyanate, and dibutyltin dilaurate catalyst, allowing the mixture to stand, and curing the mixture.
Inventors
- 👤 Chay H. Loi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/16; A61L27/165; A61L27/50; A61L27/52; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A method of producing a gel suitable for use in breast prostheses, comprising: forming a mixture of, by weight percent, 9.9% hydroxyl terminated polybutadiene resin and 89.1% 1,2-benzenedicarboxylic acid, diundecyl ester, 0.9% polymethylene polyphenyl isocyanate and 0.1% dibutyltin dilaurate catalyst; allowing the mixture to stand for about 16 hours; and curing the mixture at least two hours at a temperature of 93° C. (200° F.).
Claim 2
Independent Claim
65 words
A method of producing a gel suitable for use in breast prostheses, comprising: forming a mixture of, by weight percent, 9.9% hydroxyl terminated polybutadiene resin and 89.1% 1,2-benzenedicarboxylic acid, diundecyl ester, 0.9% polymethylene polyphenyl isocyanate and 0.1% dibutyltin dilaurate catalyst; allowing the mixture to stand for about 16 hours; and curing the mixture at least two hours at a temperature of 93° C. (200° F.).
Claim 3
Dependent Claim
79 words
A gel suitable for use in breast prostheses consisting essentially of, by weight percent, 9.9% hydroxyl terminated polybutadiene resin, 89.1% 1,2-benzenedicarboxylic acid diundecyl ester, 0.9% polymethylene polyphenyl isocyanate, and 0.1% dibutyltin dilaurate catalyst wherein the components are thoroughly mixed, allowed to stand for about 16 hours and cured for at least two hours at a temperature of 93° C. (200° F.) thereby resulting in a gel having, after 24 hours, a recording of about 180 on the precision penetrometer.
Claim 4
Dependent Claim
79 words
A gel suitable for use in breast prostheses consisting essentially of, by weight percent, 9.9% hydroxyl terminated polybutadiene resin, 89.1% 1,2-benzenedicarboxylic acid diundecyl ester, 0.9% polymethylene polyphenyl isocyanate, and 0.1% dibutyltin dilaurate catalyst wherein the components are thoroughly mixed, allowed to stand for about 16 hours and cured for at least two hours at a temperature of 93° C. (200° F.) thereby resulting in a gel having, after 24 hours, a recording of about 180 on the precision penetrometer.
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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) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |