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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4846838 B1

PDFFull Text
Date of Patent:
Jul. 11, 1989

Filed:

Jun. 18, 1987

Prosthetic body for bone substitute and a method for the preparation

Applicant:
Inventors:

Nobuharu Takai, Tokyo, JP;

Hiroyasu Noma, Tokyo, JP;

Shoichi Wakabayashi, Tokyo, JP;

Susumu Takata, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Wyatt, Gerber, Burke and Badie

Primary Examiner:

Richard J Apley

Assistant Examiner:

Alan W Cannon

Int. Cl.
CPC ...
A61F / ; C04B / ;
U.S. Cl.
CPC ...
623 16 ; 623 66 ; 501 83 ; 501 81 ; 501 82 ;
Abstract

The inventive prosthetic body for bone substitute is a sintered body of hydroxyapatite and characterized by the open pore structure with a pore diameter in a specified range forming a porosity of 20 to 40% and a bending strength of at least 100 kg/cm.sup.2. The sintered body can be prepared by blending powders of hydroxyapatite and a thermally decomposable substance, e.g. crystalline cellulose, each having a specified particle size distribution, in a specified proportion and shaping and sintering the powder blend.

Find Patent Forward Citations

Takai, Nobuharu. (1989). Prosthetic body for bone substitute and a method for the preparation (U.S. Patent No. 4846838). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4846838

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