An US Patent of threading procedure for large diameter pipe connectors has been registered.
Shimoda has developed high productivity threading procedure for large diameter pipe connectors as introduced at the site of “Technology” of this home page. This procedure has been registered as a domestic patent in 2017. Moreover, last month, it has been registered as an US Patent as shown below:
Title: Threading tool and method of threading
Patent No.: US 10,307,845 B2
Date of Patent: Jun. 4. 2019