Patents by Inventor Tsutomu IKEBE

Tsutomu IKEBE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • REFLECTIVE MASK BLANK AND REFLECTIVE MASK
    Publication number: 20240103354
    Abstract: A reflective mask blank, having a phase shift film having little dependence of phase difference and reflectance on film thickness, and a reflective mask.
    Type: Application
    Filed: December 1, 2023
    Publication date: March 28, 2024
    Applicant: HOYA CORPORATION
    Inventors: Yohei IKEBE, Tsutomu SHOKI, Takahiro ONOUE, Hirofumi KOZAKAI
  • SLIDING COMPONENTS
    Publication number: 20220170511
    Abstract: Provided is sliding components capable of stably obtaining a low-friction effect even in a non-lubricated environment. Sliding components and have sliding surfaces and performing relative sliding. A carbon film in which a polymer structure is dispersed is formed on the sliding surface of the sliding component. The proportion of the polymer structure dispersed in the carbon film is such that an extinction coefficient of 0.2 or less and a refractive index of 1.5 to 2.0 are satisfied in a wavelength range of 550 nm of spectroscopic ellipsometry.
    Type: Application
    Filed: April 7, 2020
    Publication date: June 2, 2022
    Inventors: Masao OKA, Tsutomu IKEBE, Masafumi KATO, Shota NISHIMURA, Yusuke KUNISAKI