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For the Inventor, By the Inventor

Tokyo, Japan

Iwao Numakura

USPTO Granted Patents = 17

Average Co-Inventor Count = 2.2

ph-index = 8

Forward Citations = 151(Granted Patents)


Location History:

  • Tama, JP (1989 - 2002)
  • Tokyo, JP (1990 - 2018)

Company Filing History:

goldMedal15 out of 19 
 
Yamatoya Company Limited
 patents
silverMedal1 out of 1 
 
Yamotoya & Co., Ltd.
 patent
bronzeMedal1 out of 1 
 
Tokai Shinei Electronics Inidustry Co., Ltd
 patent
4. 1 out of 1 
 
Yamatoyo & Co., Ltd.
 patent
5. 1 out of 832,843 
Other
 patents
where one patent can have more than one assignee

Years Active: 1989-2018

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17 patents (USPTO):Explore Patents
1. 9857687 - Method of manufacturing substrate and substrate and mask film (2018-01-02),
2. 6391473 - Cu plated ceramic substrate and a method of manufacturing the same (2002-05-21),
3. 5841897 - Method for the tonal control or adjustment of reproduced color image and (1998-11-24),
4. 5406394 - Color reproducing method used in an image data processing system (1995-04-11),
5. 5371616 - Tonal conversion method of a picture (1994-12-06),
6. 5357349 - Tonal conversion method for a picture (1994-10-18),
7. 5313310 - Tonal conversion method for pictures (1994-05-17),
8. 5286609 - Process for the formation of a negative resist pattern from a (1994-02-15),
9. 5212518 - Tonal conversion method for a faded color photographic original picture (1993-05-18),
10. 5134494 - Method for producing color and black plates in a multi-color plate (1992-07-28),
11. 5072305 - Picture producing apparatus using picture information values correlated (1991-12-10),
12. 5057931 - Tonal conversion method of pictures for producing reproduced pictures (1991-10-15),
13. 5014120 - Method for processing picture to be reproduced on color picture tube and (1991-05-07),
14. 4956718 - Tonal conversion method for pictures (1990-09-11),
15. 4924323 - Tonal conversion method for pictures (1990-05-08),

Title: Iwao Numakura: Innovator in Semiconductor Technology

Introduction

Iwao Numakura is a prominent inventor based in Tokyo, Japan, known for his significant contributions to semiconductor technology. With a total of 17 patents to his name, Numakura has developed innovative methods and materials that enhance the performance and efficiency of electronic devices.

Latest Patents

Among his latest patents is a method of manufacturing a substrate, which involves applying solder resist ink containing a mixture of epoxy-based and acrylic-based resins. This process forms a solder resist layer that is then treated with ultraviolet rays to control its transmissivity. Another notable patent is for a Cu plated ceramic substrate, which is utilized in semiconductors. This substrate features a thin-film chromium layer and a thin-film gold layer, which are plated with copper to improve adhesibility and heat management in semiconductor applications.

Career Highlights

Throughout his career, Iwao Numakura has worked with reputable companies, including Yamatoya & Co., Ltd. and Yamotoya & Co., Ltd. His work has been instrumental in advancing semiconductor technologies, making him a key figure in the industry.

Collaborations

Numakura has collaborated with notable colleagues such as Takashi Numakura and Susumu Kitazawa, contributing to various projects that have pushed the boundaries of semiconductor innovation.

Conclusion

Iwao Numakura's inventive spirit and dedication to advancing semiconductor technology have made a lasting impact on the field. His patents reflect a commitment to innovation that continues to shape the future of electronics.

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