Katsutoshi Yamamoto

This inventor holds 27 USPTO granted patents, primarily in Fluoropolymer Technology. Top assignees: Daikin Industries, Ltd., Daikin Kogyo Co., Ltd.. Active years: 1979-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsutoshi Yamamoto. Retrieved from https://idiyas.com/inventor/katsutoshi-yamamoto

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

USPTO Granted Patents = 27

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 15

Forward Citations = 602(Granted Patents)

Location History:

Osaka, JP (1984 - 2002)
Settsu, JP (1979 - 2006)

Company Filing History:

24 out of 4,487

Daikin Industries, Ltd.

patents

3 out of 213

Daikin Kogyo Co., Ltd.

patents

Years Active: 1979-2006

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Areas of Expertise:

Polytetrafluoroethylene

Fluororesin

High Frequency Transmission

Porous Films

Insulation Materials

Electrode Fabric

Air Filters

Deodorant Fabrics

Multilayer Membranes

Non-Woven Fabrics

Heat-Shrinkable Tubes

Composite Materials

27 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6987224 - Polytetrafluoroethylene mixed powder used for insulation of product for high frequency signal transmission and product for high frequency signal transmission using the same (2006-01-17),

2. 6479143 - Heat-meltable fluororesin fibers (2002-11-12),

3. 6416896 - Material for electrode comprising a non-woven fabric composed of a fluorine-containing resin fiber (2002-07-09),

4. 6355135 - Method of laminating gas permeable sheet material (2002-03-12),

5. 6235388 - Fibrous materials of fluororesins and deodorant and antibacterial fabrics made by using the same (2001-05-22),

6. 6156681 - Multi layered felt, member formed of same, and method of manufacturing (2000-12-05),

7. 6133165 - Bulky polytetrafluoroethylene filament and split yarn, method of (2000-10-17),

8. 6117556 - Tape for sealing screw joints (2000-09-12),

9. 5998022 - Polytetrafluoroethylene cotton-like materials (1999-12-07),

10. 5912077 - Cotton-like mixed materials, non-woven fabrics obtained therefrom and (1999-06-15),

11. 5834528 - Polytetrafluoroethylene porous composite film (1998-11-10),

12. 5807633 - Polytetrafluoroethylene composite fiber, cotton-like materials obtained (1998-09-15),

13. 5772884 - Porous polytetrafluoroethylene film and process for preparation thereof (1998-06-30),

14. 5688836 - Polytetrafluoroethylene porous material and process for production of (1997-11-18),

15. 5562986 - Polytetrafluoroethylene fibers, polytetrafluoroethylene materials and (1996-10-08),

Title: Katsutoshi Yamamoto: A Pioneer in High-Frequency Signal Transmission Innovations

Introduction

Katsutoshi Yamamoto is a renowned inventor based in Settsu, Japan, who has made significant contributions to the field of materials science, specifically focusing on polytetrafluoroethylene (PTFE) technologies. With an impressive portfolio of 27 patents, Yamamoto has established himself as a key player in innovations that enhance the performance of materials in high-frequency signal transmission.

Latest Patents

Among his latest patents is the development of a polytetrafluoroethylene mixed powder designed for insulation of products intended for high-frequency signal transmission. This innovative powder is a result of mixing low molecular weight PTFE powder with high molecular weight PTFE powder, each exhibiting specific thermal properties. The low molecular weight PTFE powder holds a number average molecular weight of approximately 1,000,000 and demonstrates a maximum peak temperature of 327°C in its crystallization process. Conversely, the high molecular weight PTFE powder possesses a number average molecular weight of around 4,500,000 with a peak temperature of 340°C. The mixed powder is noted for its definitive peak temperatures, marking significant advancements in material properties for high-frequency applications.

Another notable invention is his heat-meltable fluororesin fibers, which offer excellent intermingling properties suitable for a diverse range of fiber products. Utilizing fluorine-containing resins, such as ETFE with a branched structure, Yamamoto's work allows for the creation of non-woven fabrics, enhancing the performance characteristics of various materials.

Career Highlights

Yamamoto's career includes substantive tenures at leading companies such as Daikin Industries, Ltd. and Daikin Kogyo Co., Ltd. His work at these organizations underscores his commitment to innovation in high-performance materials. Through his inventive endeavors, he has played a vital role in advancing technologies that meet the demands of modern electronic applications.

Collaborations

Throughout his distinguished career, Katsutoshi Yamamoto has collaborated with other eminent professionals in the field, including Jun Asano and Shinji Tamaru. These partnerships have fostered an environment of innovation, contributing to the collective advancements in material science and engineering.

Conclusion

Katsutoshi Yamamoto stands out as a prominent inventor whose work continues to shape the future of high-frequency signal transmission materials. With a strong foundation built on a multitude of patents, his innovations not only reflect a deep understanding of material properties but also demonstrate a commitment to enhancing technology for various applications in the field.

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]