logo

For the Inventor, By the Inventor

Kanagawa, Japan

Shigeki Niwa

This inventor holds 8 USPTO granted patents. Top assignee: Toshiba Ceramics Co., Ltd.. Active years: 1991-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeki Niwa. Retrieved from https://idiyas.com/inventor/shigeki-niwa

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 23(Granted Patents)


Location History:

  • Osada, JP (1998)
  • Aichi, JP (1991 - 1999)
  • Toyoake, JP (1996 - 1999)
  • Kanagawa, JP (1999 - 2001)

Company Filing History:

goldMedal8 out of 189 
 
Toshiba Ceramics Co., Ltd.
 patents

Years Active: 1991-2001

Loading Chart...
8 patents (USPTO):Explore Patents
1. 6187463 - Material for sintering appliance (2001-02-13),
2. 6001470 - Calcining tool material and method of fabricating thereof (1999-12-14),
3. 5972529 - Material for sintering appliance (1999-10-26),
4. 5958279 - Refractory slide-gate plate (1999-09-28),
5. 5804324 - Setting member for heating material (1998-09-08),
6. 5730892 - Recycled slide gate plate (1998-03-24),
7. 5556568 - Slide gate plate (1996-09-17),
8. 5055433 - Refractory having high resistance to corrosion and spalling and (1991-10-08),

Title: Shigeki Niwa: Innovator in Sintering Technology

Introduction

Shigeki Niwa is a prominent inventor based in Kanagawa, Japan, known for his significant contributions to the field of materials science. With a total of eight patents to his name, Niwa has made remarkable advancements in the development of materials for sintering appliances.

Latest Patents

Among his latest patents is a material for sintering appliances, which comprises a base material made of alumina-silica containing 65 to 95% by weight of Al2O3. This innovative material features a flame-coated film composed of ZrO2 and CaO as its main components, with the content of CaO ranging from 23 to 30% by weight based on the weight of ZrO2 and CaO. The mineral composition of the coated film is calcium zirconate, and it is designed to have a thermal expansion difference of 0.3% or more at 1,200°C. Another notable patent is for a calcining tool material, which includes a flame-spray zirconia coating layer made of unstabilized zirconia and stabilized or partially-stabilized zirconia in admixture. This coating is formed on the surface of an alumina-silica-based substrate with an Al2O3 content of not less than 65% by weight.

Career Highlights

Shigeki Niwa has established himself as a key figure in the materials science sector, particularly through his work at Toshiba Ceramics Co., Ltd. His innovative approaches to material development have positioned him as a leader in the industry.

Collaborations

Niwa has collaborated with notable colleagues, including Hiroshi Okada and Toshiyuki Suzuki, contributing to the advancement of technology in their field.

Conclusion

Shigeki Niwa's contributions to materials science, particularly in sintering technology, highlight his role as an influential inventor. His patents reflect a commitment to innovation and excellence in the industry.

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]
Loading…