Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Optical device diffraction gratings and a photomask for use in the same

Optical device diffraction gratings and a photomask for use in the same

US Patent 5340637 · Granted Aug 23, 1994

Estimated economic value: $158,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Semiconductor device2025
Semiconductor device2023
Semiconductor device and a manufacturing method of semiconductor device2023
Semiconductor device2021
Spectroscopic detector2021
Method for producing boron nitride nanotube-reinforced aluminum composite castin2020
Mobile body using removable battery2020
Semiconductor device and method for manufacturing semiconductor device2019
Straddled electric vehicle, and charging system for straddled electric vehicle2019
Negative electrode material for lithium ion secondary battery and manufacturing 2018
Target substance transfer method, crystal production method, composition product2017
Spectrometry device, liquid chromatograph, and wavelength calibration method of 2016