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For the Inventor, By the Inventor

Yokohama, Japan

Fumio Kataoka

USPTO Granted Patents = 18

Average Co-Inventor Count = 5.0

ph-index = 9

Forward Citations = 266(Granted Patents)


Company Filing History:

goldMedal16 out of 42,508 
 
Hitachi, Ltd.
 patents
silverMedal7 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1984-2001

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18 patents (USPTO):Explore Patents
1. 6319656 - Photosensitive polyimide precursor and its use for pattern formation (2001-11-20),
2. 6200831 - Surface-protecting film and resin-sealed semiconductor device having said film (2001-03-13),
3. 6087006 - Surface-protecting film and resin-sealed semiconductor device having (2000-07-11),
4. 6025113 - Photosensitve polymide precursor and its use for pattern formation (2000-02-15),
5. 5851681 - Wiring structure with metal wiring layers and polyimide layers, and (1998-12-22),
6. 5753372 - Wiring structures and method of manufacturing the same (1998-05-19),
7. 5536584 - Polyimide precursor, polyimide and metalization structure using said (1996-07-16),
8. 5399758 - Diacylhydrazine photo-reactive compounds (1995-03-21),
9. 5388328 - Process for fabricating an interconnected multilayer board (1995-02-14),
10. 5300735 - Interconnected multilayer boards and fabrication processes thereof (1994-04-05),
11. 5272247 - Polyimide precursor, cured product thereof, and processes for producing (1993-12-21),
12. 4748228 - Process for producing organic silicon-terminated polyimide precursor and (1988-05-31),
13. 4727185 - Process for preparation of 3,3',4,4'-biphenyltetracarboxylic acid salts (1988-02-23),
14. 4587197 - Flexible photosensitive polymer composition with azide and/or amine (1986-05-06),
15. 4565767 - Light-sensitive polymer composition with poly(amic acid), bisazide, and (1986-01-21),

Title: Fumio Kataoka: Innovator in Photosensitive Polyimides

Introduction

Fumio Kataoka is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of materials science, particularly in the development of photosensitive polyimides. With a total of 18 patents to his name, Kataoka has established himself as a key figure in innovation.

Latest Patents

Kataoka's latest patents include groundbreaking work on a photosensitive polyimide precursor and its application for pattern formation. This polyimide precursor features repeating units that enhance its functionality. Another notable patent involves a surface-protecting film and a resin-sealed semiconductor device that utilizes this film. The surface-protecting film is designed to prevent peeling and cracking of the sealing member in semiconductor devices by applying a polyimide precursor composition that is heat-cured.

Career Highlights

Throughout his career, Fumio Kataoka has worked with leading companies such as Hitachi, Ltd. and Hitachi Chemical Company, Ltd. His experience in these organizations has allowed him to refine his expertise and contribute to significant advancements in technology.

Collaborations

Kataoka has collaborated with notable colleagues, including Fusaji Shoji and Hitoshi Yokono. These partnerships have fostered an environment of innovation and have led to the development of several important technologies.

Conclusion

Fumio Kataoka's work in the field of photosensitive polyimides has had a lasting impact on technology and materials science. His numerous patents and collaborations highlight his dedication to innovation and excellence.

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