US4743259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of demineralized bone matrix in the repair of segmental defects
Assignee: UVA Licensing and Ventures Group
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Filing: 1986-10-29
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Granted: 1988-05-10
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Expires: 2006-10-29
Abstract
Abstract A process of grafting material from milled bone is disclosed which comprises augmenting the bone protein of a first quantity of milled bone by dialyzing from solution guanidine-extracted bone proteins from a second quantity of milled bone and adding the extracted proteins to the first quantity of milled bone. Next, unbound proteins are removed and then the augmented milled bone is lypohilized, after which the augmented milled bone is coated with anti-coagulated plasma containing plasma proteins. Any unbound plasma protein is removed from the coating by rinsing.
Inventors
- 👤 Mark E. Bolander
- 👤 Gary Balian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3604; A61L27/3608; A61F; A61F2/00; A61F2/02; A61F2/28; A61K; A61K35/00; A61K35/12; A61K35/32; A61L27/3616; A61L27/3641; A61L27/3645; A61L27/365; A61F2002/2835; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
The process of grafting material from milled bone, comprising, augmenting the bone proteins of a first quantity of milled bone by dialyzing from solution guanidine-extracted bone proteins from a second quantity of milled bone, adding the extracted bone proteins extracted from the second quantity of milled bone to the first quantity of milled bone, removing unbound bone proteins from the augmented first quantity, and lyophilizing the augmented first quantity of milled bone, coating the augmented first quantity of milled bone with anti-coagulated plasma containing plasma proteins, and removing unbound plasma proteins from the coated augmented first quantity of milled bone by rinsing.
Claim 2
Dependent Claim
102 words
The process of grafting material from milled bone, comprising, augmenting the bone proteins of a first quantity of milled bone by dialyzing from solution guanidine-extracted bone proteins from a second quantity of milled bone, adding the extracted bone proteins extracted from the second quantity of milled bone to the first quantity of milled bone, removing unbound bone proteins from the augmented first quantity, and lyophilizing the augmented first quantity of milled bone, coating the augmented first quantity of milled bone with anti-coagulated plasma containing plasma proteins, and removing unbound plasma proteins from the coated augmented first quantity of milled bone by rinsing.
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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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |