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US4938763B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Biodegradable in-situ forming implants and method of producing the same

Assignee: Tolmar Therapeutics Inc
•
Filing: 1988-10-03
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Granted: 1995-07-04
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Expires: 2008-10-03
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Abstract

Abstract A biodegradable thermosetting polymer system is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. The thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. The system provides a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body. <IMAGE> <IMAGE>

Inventors

  • 👤 Richard L Dunn
  • 👤 James P English
  • 👤 Donald R Cowsar
  • 👤 David P Vanderbilt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 08:16
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0024; A61F; A61F2/00; A61K47/00; A61K47/30; A61K47/34; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/44; A61L15/62; A61L24/00; A61L24/001; A61L24/0015; A61L24/0026; A61L24/0042; A61L24/04; A61L24/046; A61L24/06; A61L26/00; A61L26/0009; A61L26/0019; A61L26/0061; A61L26/0066; A61L26/0076; A61L26/009; A61L27/00; A61L27/14; A61L27/16; A61L27/18; A61L27/26; A61L27/28; A61L27/34; A61L27/50; A61L27/54; A61L27/58; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30316; A61F2002/30535; A61F2002/30581; A61F2002/30583; A61F2210/00; A61F2210/0004; A61F2210/0085; A61L2300/00; A61L2300/20; A61L2300/25; A61L2300/252; A61L2300/40; A61L2300/404; A61L2300/406; A61L2300/41; A61L2300/60; A61L2300/602; A61L2300/604; Y; Y10; Y10S; Y10S525/00; Y10S525/937

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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) 1998-07-03 1999-01-02 1999-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-07-03 2003-01-02 2003-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-07-03 2007-01-02 2007-07-04 $7700.00 Window Closed / Lapsed

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