Norio Kashiwa

This inventor holds 93 USPTO granted patents and 1 published patent application and 9 EPO patents, primarily in Olefin Polymerization (CPC class 526125). Top assignees: Mitsui Petrochemical Industries, Ltd., Mitsui Chemicals, Inc., Montedison S.p.a.. Active years: 1978-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norio Kashiwa. Retrieved from https://idiyas.com/inventor/norio-kashiwa

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

USPTO Granted Patents = 93 (Patent Applications = 1)

% Patents Active = 95.7

EPO Patents = 9 (Patent Applications = 5)

Average Co-Inventor Count = 3.2

ph-index = 29

Forward Citations = 2,480(Granted Patents)

Forward Citations (Not Self Cited) = 2,368(Dec 10, 2025)

Inventors with similar research interests:

🔬 See more inventors

Location History:

Iwakuni, JA (1978)
Muronoki-cho, JP (1998)
Iwakuni, JP (1979 - 2000)
Chiba, JP (2006)
Minato-ku, JP (2010)
Minato, JP (2011)
Sodegaura, JP (2004 - 2012)

Company Filing History:

72 out of 1,008

Mitsui Petrochemical Industries, Ltd.

patents

19 out of 1,816

Mitsui Chemicals, Inc.

where one patent can have more than one assignee

Years Active: 1978-2012

Loading Chart...

Areas of Expertise:

Olefin Polymer

Polymerization Catalyst

Branched Copolymer

Thermoplastic Resin

Alpha-Olefins

Polyolefin Macromonomer

Hybrid Polymer

Transition Metal Compounds

Molded Articles

Polymer Production

Thermoplastic Composition

Modified Polyolefin

93 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8338557 - Olefin polymer and process for preparing the same (2012-12-25),

2. 7868097 - Hybrid polymer and method for production thereof (2011-01-11),

3. 7803888 - Olefin-based polymers and uses thereof (2010-09-28),

4. 7795347 - Multi-branched polymer, process for producing the same, and applications thereof (2010-09-14),

5. 7714087 - Polar group-containing olefin copolymer, process for preparing the same, thermoplastic resin composition containing the copolymer, and uses thereof (2010-05-11),

6. 7592403 - Ethylene polymer, preparation process thereof and molded articles of the same (2009-09-22),

7. 7566761 - Olefin polymer and process for preparing the same (2009-07-28),

8. 7488789 - Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization (2009-02-10),

9. 7393907 - Polar group-containing olefin copolymer, process for preparing the same, thermoplastic resin composition containing the copolymer, and uses thereof (2008-07-01),

10. 7160949 - Olefin block copolymers, processes for producing the same and uses thereof (2007-01-09),

11. 7067587 - Polyolefin macromonomer, graft polymer obtained from the polyolefin macromonomer, and use thereof (2006-06-27),

12. 7022763 - Branched olefin copolymer, process for producing the same, and use thereof (2006-04-04),

13. 6995229 - Polymer and process for producing the same (2006-02-07),

14. 6897176 - Olefin polymerization catalyst and process for producing olefin polymer with the catalyst (2005-05-24),

15. 6838540 - Olefin polymer and production processes thereof (2005-01-04),

Title: Norio Kashiwa: Pioneering Innovations in Technology

Introduction: Norio Kashiwa, a visionary inventor hailing from Iwakuni, JP, has left an indelible mark on the world of technology with his relentless pursuit of innovation. His numerous patents and groundbreaking research continue to inspire inventors and innovators globally.

Latest Patents: Norio Kashiwa's latest patents delve into the realm of advanced materials and production processes, showcasing his expertise in polymer chemistry. One of his notable inventions includes an olefin polymer with specific molecular weight distribution and functional group variations. Additionally, he has developed a hybrid polymer that combines polyolefin and polar polymer segments seamlessly, revolutionizing industrial production methods.

Career Highlights: With an impressive portfolio of 93 patents, Norio Kashiwa has made significant contributions to companies like Mitsui Petrochemical Industries, Ltd., and Mitsui Chemicals, Inc. His work in polymer synthesis and material science has garnered recognition for its innovative approach and practical applications in various industries.

Collaborations: Throughout his career, Norio Kashiwa has collaborated with esteemed colleagues such as Akinori Toyota and Mamoru Kioka. Their collective expertise and shared passion for cutting-edge research have led to several groundbreaking inventions and advancements in the field of polymer chemistry.

Conclusion: Norio Kashiwa's dedication to innovation and his exceptional contributions to technology underscore his status as a true visionary in the world of inventions. His legacy continues to shape the landscape of modern industry, inspiring future generations of inventors to push the boundaries of what is possible in the realm of innovation.

Profile summary based on public USPTO records.