Company Filing History:
3 out of 165 
1 out of 832,843 Years Active: 1999-2002
Title: Innovations of Calvin T Chow
Introduction
Calvin T Chow is a notable inventor based in Portola Valley, California. He has made significant contributions to the field of photometry, particularly in the determination of light absorption pathlength in liquid samples. With a total of four patents to his name, Chow's work has advanced the methods and devices used in optical analysis.
Latest Patents
Chow's latest patent focuses on the determination of light absorption pathlength in a vertical-beam photometer. This invention discloses photometric methods and devices that determine the optical pathlength of liquid samples containing analytes dissolved or suspended in a solvent. The methods rely on establishing a relationship between the light absorption properties of the solvent and the optical pathlength of the samples. This relationship is crucial for determining the optical pathlength for samples with unknown analyte concentrations but similar solvent compositions. Furthermore, the invention includes methods for determining the concentration of analytes in samples where both the optical pathlength and analyte concentration are unknown. The devices described, particularly vertical-beam photometers, can monitor light absorption at multiple wavelengths, including visible and near-infrared regions. Notably, these devices can automatically determine analyte concentrations in multi-assay plates without the need for a standard curve.
Career Highlights
Throughout his career, Calvin T Chow has worked with various companies, including Molecular Devices Corporation. His expertise in photometry and optical analysis has positioned him as a key figure in the development of innovative measurement techniques.
Collaborations
Chow has collaborated with professionals in his field, including Dean G Hafeman, to further enhance the capabilities of photometric devices and methods.
Conclusion
Calvin T Chow's contributions to the field of photometry through his innovative patents have significantly advanced the understanding and measurement of light absorption in liquid samples. His work continues to influence the development of more efficient and accurate analytical devices.