Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Novel tetrazole-5-thiol ester and process for preparing cefamandole using same

Novel tetrazole-5-thiol ester and process for preparing cefamandole using same

US Patent 4417047 · Granted Nov 22, 1983

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method of polishing silicon wafer and method of producing silicon wafer2025
Wiring board and semiconductor device2025
Water absorbent resin and water stop material2025
Semiconductor wafer evaluation method and manufacturing method and semiconductor2024
Expression cassette2023
Wiring board2023
Imaging device with focusing operation based on subject and predetermined region2022
Imaging apparatus with correction factor scaling of image2022
Water-absorbent resin and method of producing water-absorbent resin2021
Electronic component housing apparatus and electronic device2020
Temperature measurement device using strain gauge2020
Water-absorbent resin and absorbent article2020