Location History:
- Brookeville, MD (US) (1993)
- Olney, MD (US) (1994)
Company Filing History:
1 out of 16,076 
1 out of 735 
Years Active: 1993-1994
Title: **David C Cranmer: Innovator in Optical Materials**
Introduction
David C Cranmer, an accomplished inventor based in Brookeville, Maryland, has made significant contributions to the field of optical materials with two registered patents. His innovative work focuses primarily on developing advanced glass compositions for use in various applications.
Latest Patents
David's latest patents include a groundbreaking **Ultraviolet Faraday Rotator Glass**. This invention comprises a composition based on fluoride glass, phosphate glass, fluorophosphate glass, or a mixture thereof, doped with lanthanides to provide a Verdet constant exceeding 2870 deg/Tesla-meter and optical transmission greater than 50 percent in a 25 mm thick polished glass sample, specifically in the 200 to 400 nm wavelength region. Additionally, it features monovalent non-lanthanide cations and divalent or trivalent non-lanthanide cations to enhance performance and surface flatness.
Another notable patent is for **Neutron Absorbing Glass Compositions**, which include SiO₂, lithium oxide (⁶Li₂O), and optionally aluminum oxide (Al₂O₃), offering neutron absorption capabilities without gamma-ray release. These compositions represent a significant advancement in safety and functionality in materials used for nuclear applications.
Career Highlights
Throughout his career, David has collaborated with notable organizations, including the United States of America, represented by the Secretary of the Navy, and the Government of the United States of America, represented by the Secretary of Commerce. His expertise and contributions have been essential in various governmental projects and initiatives.
Collaborations
David has worked alongside respected colleagues, including Douglas H Blackburn and Dale A Kauffman. Their collaborative efforts have contributed to the advancement of technologies in the optical materials industry, demonstrating the importance of teamwork in innovation.
Conclusion
David C Cranmer stands out as a significant inventor in the field of optical materials. His patents reflect his dedication to enhancing the functionality and safety of glass compositions. As an innovator, he continues to inspire future developments in technology through his significant contributions and collaborations within the research community.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.