Company Filing History:
3 out of 15,458 
1 out of 348 Years Active: 2009-2013
Title: Valeriy V Yashchuk: Innovator in Surface Profilometry and Diffraction Gratings
Introduction
Valeriy V Yashchuk is a notable inventor based in Richmond, CA (US). He has made significant contributions to the fields of surface profilometry and diffraction gratings, holding a total of 3 patents. His work has advanced the calibration methods for surface measurement tools and the design of high-density diffraction gratings.
Latest Patents
Yashchuk's latest patents include innovative technologies that enhance the precision of surface measurement. One of his key inventions is a method for creating test surfaces useful for the calibration of surface profilometers. This invention utilizes a specially designed Binary Pseudo-random (BPR) grating to measure the power spectral density (PSD) spectrum, allowing for accurate calibration of instruments like interferometric and atomic force microscopes. Another significant patent involves an ultra-high density diffraction grating structure. This structure features an echellette substrate with periodically repeating recessed features and a multi-layer stack of materials. The design allows for a line density ranging from about 10,000 lines/mm to about 100,000 lines/mm, making it suitable for applications in extreme ultraviolet (EUV) and soft X-ray technologies.
Career Highlights
Throughout his career, Valeriy V Yashchuk has worked with prestigious institutions such as the University of California and Brookhaven Science Associates, LLC. His experience in these organizations has contributed to his expertise in the development of advanced measurement technologies.
Collaborations
Yashchuk has collaborated with notable colleagues, including Shoujun Xu and Thomas L Lowery. These partnerships have fostered innovation and have been instrumental in the successful development of his patented technologies.
Conclusion
Valeriy V Yashchuk's contributions to the fields of surface profilometry and diffraction gratings highlight his role as a leading inventor. His innovative patents and collaborations reflect his commitment to advancing measurement technologies.
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