Sifangda: Obtained two utility model patent certificates
September 21 23:03:56, 2025
Henan Sifangda Superhard Materials Co., Ltd. (hereinafter referred to as "the company") has recently been granted two utility model patent certificates by the State Intellectual Property Office. These patents reflect the company's ongoing commitment to innovation and technological advancement in its manufacturing processes. Below are the details of the newly acquired patents:
| No. | Patent Name | Patent No. | Patentee | Patent Type | Authorization Announcement Day |
|-----|-------------|------------|----------|-------------|------------------------------|
| 1 | Special Clamping Device for Machining the Outer Circumference of Sheet Workpieces Without a Centerless Grinding Machine | ZL201320437520.X | Sifangda | Utility Model | December 18, 2013 |
| 2 | Blade Holder for Cutting the Sipe on the Blade | ZL201320471648.8 | Sifangda | Utility Model | January 8, 2014 |
The first patent, titled "Special Clamping Device for Machining the Outer Circumference of Sheet Workpieces Without a Centerless Grinding Machine," introduces an innovative clamping mechanism. This device features two oppositely arranged tubular constraining pieces that form a semi-open tubular structure. When machining sheet workpieces, multiple sheets are placed between these semi-open structures, and the ends are tightened to shape them into a cylindrical form. This design allows for efficient feeding into a centerless grinding machine, enabling precise cylindrical grinding.
The second patent, "Blade Holder for Cutting the Sipe on the Blade," is designed to hold multiple blades simultaneously. This enables the wire electrical discharge machine to perform sipe cutting on several blades at once, significantly improving processing efficiency. By reducing the number of clamping operations, it minimizes clamping errors, resulting in better accuracy and uniformity in the sipe cuts. This improvement ensures longer blade service life and enhanced performance.
These utility model patents have already been integrated into the company’s product line, demonstrating their practical application and value. While the acquisition of these patents may not directly impact daily production, they play a crucial role in protecting the company's intellectual property. They also support the development of a continuous innovation system, strengthening the company's competitive edge in the market.
By investing in research and development, Henan Sifangda continues to position itself as a leader in superhard materials, ensuring long-term growth and sustainability.
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