Patents Assigned to Pedro Manoel Buarque De Macedo - Justia Patents Search

Patents Assigned to Pedro Manoel Buarque De Macedo

Method of producing a glass article having a graded refractive index profile of a parabolic nature

Patent number: 4302231

Abstract: A method of producing a glass article having a graded refractive index profile of a parabolic nature is disclosed.

Type: Grant

Filed: January 29, 1979

Date of Patent: November 24, 1981

Assignees: Pedro Manoel Buarque De Macedo, Theodore Aaron Litovitz

Inventors: Pedro B. Macedo, Joseph H. Simmons, Shigeo Murai