Otto Frey

This inventor holds 56 USPTO granted patents, primarily in Prosthetic Implants (CPC class 623 ). Top assignees: Sulzer Brothers Limited, Protek Ag, Feldmuhle Anlagen- Und Produktionsgesellschaft MIT Beschrankter Haftung. Active years: 1977-1993.

USPTO Granted Patents = 56

% Patents Active = 100.0

Average Co-Inventor Count = 1.8

ph-index = 32

Forward Citations = 3,889(Granted Patents)

Forward Citations (Not Self Cited) = 3,873(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

51 out of 790

Sulzer Brothers Limited

Feldmuhle Anlagen- Und Produktionsgesellschaft MIT Beschrankter Haftung

Silver Brothers Limited

patent

where one patent can have more than one assignee

Years Active: 1977-1993

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Areas of Expertise:

Femoral Prosthesis

Acetabular Cup

Intervertebral Prosthesis

Ligament Anchor

Bone Implant

Endoprosthesis

Metal Implant

Joint Socket

Fixing Stem

Reinforcement

Rasp-like Reaming Instrument

Artificial Ligament

56 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5197988 - Femoral prosthesis (1993-03-30),

2. 5192331 - Shank for a femur head prosthesis (1993-03-09),

3. 5176708 - Prosthetic implant (1993-01-05),

4. 5133767 - Prosthesis having a deformable implant surface (1992-07-28),

5. 5108431 - Ligament anchor (1992-04-28),

6. 5092896 - Finger joint prosthesis (1992-03-03),

7. 5037442 - Fixing stem for a prosthesis (1991-08-06),

8. 5019082 - Rasp-like reaming instrument (1991-05-28),

9. 4988359 - Fixing stem for an endoprosthesis (1991-01-29),

10. 4978355 - Plastic bone implant having a reinforced contact surface (1990-12-18),

11. 4976738 - Porous metal overlay for an implant surface (1990-12-11),

12. 4969910 - Acetabular cup prosthesis (1990-11-13),

13. 4969907 - Metal bone implant (1990-11-13),

14. 4963153 - Metal tibial anchoring part for a partial knee joint prosthesis (1990-10-16),

15. 4961748 - Sleeve for an acetabulum (1990-10-09),

Title: The Innovative Journey of Otto Frey

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