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For the Inventor, By the Inventor

Ichikawa, Japan

Sadao Moritomo

This inventor holds 6 USPTO granted patents. Top assignee: Seiko Seiki Kabushiki Kaisha. Active years: 1976-1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadao Moritomo. Retrieved from https://idiyas.com/inventor/sadao-moritomo

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 157(Granted Patents)


Location History:

  • Ichikawa, JA (1976 - 1977)
  • Narashino, JP (1978)

Company Filing History:

goldMedal6 out of 132 
 
Seiko Seiki Kabushiki Kaisha
 patents

Years Active: 1976-1978

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6 patents (USPTO):Explore Patents
1. 4118900 - Method for controlling grinding process (1978-10-10),
2. 4116506 - Preloaded bearing (1978-09-26),
3. 4045919 - High speed grinding spindle (1977-09-06),
4. 4019288 - Grinding method and apparatus (1977-04-26),
5. 4006953 - Spindle assembly having an electrode spindle (1977-02-08),
6. 3964210 - Grinding apparatus (1976-06-22),

Title: Sadao Moritomo: Innovator in Grinding Technology

Introduction

Sadao Moritomo is a prominent inventor based in Ichikawa, Japan. He has made significant contributions to the field of engineering, particularly in grinding technology. With a total of 6 patents to his name, Moritomo has developed innovative solutions that enhance the efficiency and effectiveness of grinding processes.

Latest Patents

One of Moritomo's latest patents is a method for controlling the grinding process. This invention allows for the control of either the revolutional speed of the workpiece or the grinding wheel, along with the infeed speed of the wheel to the workpiece. The goal is to achieve optimum grinding conditions by maintaining suitable ratios of surface speeds and infeed speeds, even as the wheel diameter decreases due to dressing. Another notable patent is for a preloaded bearing, which features a spindle supported by ball bearings and utilizes pressurized fluid to counteract radial loads. This design not only improves performance but also ensures effective lubrication of the bearings.

Career Highlights

Moritomo is currently employed at Seiko Seiki Kabushiki Kaisha, a company known for its advancements in precision machinery. His work has been instrumental in developing technologies that are widely used in various industrial applications.

Collaborations

Throughout his career, Moritomo has collaborated with talented individuals such as Shigenori Ando and Youji Tatsumi. These partnerships have fostered innovation and contributed to the success of their projects.

Conclusion

Sadao Moritomo's contributions to grinding technology and his innovative patents reflect his dedication to advancing engineering practices. His work continues to influence the industry and inspire future inventors.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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