Location History:
- North Hudson, WI (US) (1989)
- Saint Paul, MN (US) (1992)
Company Filing History:
Years Active: 1989-1992
Title: The Innovations of Paul T Ihn
Introduction
Paul T Ihn is a notable inventor based in Saint Paul, MN (US), recognized for his contributions to the field of ophthalmic lenses. With a total of 2 patents, he has made significant advancements in lens technology that enhance vision correction.
Latest Patents
One of Ihn's latest patents is the "Multifocal diffractive ophthalmic lens and method of manufacture." This innovative lens design includes first and second lens members, each featuring a smooth outer surface and an inner surface with an edge around its perimeter. A multifocal diffractive zone plate is incorporated on at least one of the lens members, characterized by a specific index of refraction. The lens members are joined at the edges through ultrasonic welding, creating a cavity adjacent to the diffractive zone plate. This cavity is filled with a liquid medication that has a different index of refraction than the zone plate, and a hole through one of the lens members serves as a fluid transport mechanism to allow medication transfer between the cavity and the eye.
Another significant patent is the "Lens molding apparatus and method." This patent discloses a mold and method for producing a lens that can be placed in or on the eye. The mold features an inflexible ridge, preferably with a triangular cross-section, on one of the mold parts. This ridge contacts the other mold part along an annular line, facilitating the lens production process.
Career Highlights
Paul T Ihn has had a distinguished career, working at the Minnesota Mining and Manufacturing Company, where he has been able to apply his innovative ideas in practical applications. His work has contributed to advancements in the field of ophthalmology, particularly in the design and manufacturing of lenses.
Collaborations
Throughout his career, Ihn has collaborated with notable colleagues, including William B Isaacson and John A Futhey. These collaborations have likely fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies in lens design.
Conclusion
Paul T Ihn's contributions to the field of ophthalmic lenses demonstrate his commitment to innovation and improvement in vision correction technologies. His patents reflect a deep understanding of both the technical and practical aspects of lens design, making him a significant figure in the industry.