Process for forming a bioactive hydroxyapatite film

Patent 5068122 Issued on November 26, 1991. Estimated Expiration Date:

November 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Process for making bioactive coatings on osseous prostheses, and prostheses thus obtained
Patent #: 4366183
Issued on: 12/28/1982
Inventor: Ghommidh , et al.

Dental resptorative cement pastes
Patent #: 4518430
Issued on: 05/21/1985
Inventor: Brown , et al.

Fluoride-containing Bioglass™ compositions
Patent #: 4775646
Issued on: 10/04/1988
Inventor: Hench , et al.

Calcium phosphate bone substitute materials
Patent #: 4861733
Issued on: 08/29/1989
Inventor: White

Process for surface modification of inorganic biomaterial
Patent #: 4871384
Issued on: 10/03/1989
Inventor: Kasuga

Fibrous bone filler and process of producing the same
Patent #: 4904257
Issued on: 02/27/1990
Inventor: Mori, et al.

Bone replacement material on the basis of carbonate and alkali containing calciumphosphate apatites
Patent #: 4917702
Issued on: 04/17/1990
Inventor: Scheicher, et al.

Composite structure useful as artificial bones Patent #: 4950294
Issued on: 08/21/1990
Inventor: Hakamatsuka

Inventors

Assignee

Kyoto University

Application

No. 435206 filed on 11/08/1989

US Classes:

427/2.1, MEDICAL OR DENTAL PURPOSE PRODUCT; PARTS; SUBCOMBINATIONS; INTERMEDIATES (E.G., BALLOON CATHETER, SPLINT)427/2.24, Implantable permanent prosthesis (i.e., artificial body member) (e.g., pacemaker, lens, cornea, glaucoma shunt, heart valve, muscle, spinal disc, breast, internal organ)427/2.26, For mineralized body part (e.g., bone, tooth, crown, hip)427/2.27, Inorganic oxygen-containing compound containing layer formed (e.g., hydroxyapatite, ceramic, glass)427/430.1, IMMERSION OR PARTIAL IMMERSION623/920METHOD OR APPARATUS FOR PREPARING OR TREATING PROSTHETIC

Examiners

Primary: Beck, Shrive
Assistant: Owens, Terry J.

Attorney, Agent or Firm

Fleit, Jacobson, Cohn, Price, Holman & Stern

Foreign Patent References

53-118411 JP 10/13/1978

International Class

B05D 007/24

Foreign Application Priority Data

1989-03-29 JP

Abstract

Bone-like, bioactive hydroxyapatite films are formed on any substrates of inorganic, metallic or organic material, by soaking a glass mainly comprising CaO and SiO2 and a substrate arranged in a face-to-face relation, a predetermined distance apart, in an aqueous solution substantially saturated or supersaturated with constituent ions of hydroxyapatite.

Other References

Proceedings of Fall Meeting, The Ceramic Society of Japan, 1988; pp. 401-402 (w/translation)
9th Annual Meeting of Japanese Society for Biomaterials, 1987; p. 6, (w/translation)
Proceedings of Fall Meeting, the Ceramic Society of Japan, 1988; pp. 417-418 (w/translation)
M. Ogino et al., Journal of Non-Crystalline Solids, vols. 38, 39, part 2, May/Jun. 1980; pp. 673-678, "Formation of calcium phosphate films on silicate glasses