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For the Inventor, By the Inventor

Niihama, Japan

Kazuomi Ryoshi

This inventor holds 54 USPTO granted patents and 10 published patent applications and 8 EPO patents, primarily in Lithium-Ion Battery Chemistry. Top assignees: Sumitomo Metal Mining Company, Ltd., Toyota Jidosha Kabushiki Kaisha, Panasonic Energy Co., Ltd.. Active years: 2012-2025.

USPTO Granted Patents = 54 

% Patents Active = 98.1

 

Average Co-Inventor Count = 3.1

ph-index = 4

Forward Citations = 59(Granted Patents)

Forward Citations (Not Self Cited) = 55(Dec 10, 2025)


Location History:

  • Niihama, JP (2012 - 2024)
  • Ehime, JP (2016 - 2024)

Company Filing History:

goldMedal54 out of 898 
 
Sumitomo Metal Mining Company, Ltd.
 patents
silverMedal4 out of 38,723 
 
Toyota Jidosha Kabushiki Kaisha
 patents
bronzeMedal1 out of 98 
 
Panasonic Energy Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2012-2025

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Areas of Expertise:
Lithium-Ion Battery
Nickel Manganese Cobalt
Composite Hydroxide
Positive Electrode Material
Nonaqueous Electrolyte
Active Material Production
Battery Technology
Chemical Reaction Device
Electrode Material
Manufacturing Method
Electrolyte Secondary Battery
Battery Materials
54 patents (USPTO):Explore Patents
1. 12454465 - Nickel manganese cobalt composite hydroxide, method for producing nickel manganese cobalt composite hydroxide, lithium nickel manganese cobalt composite oxide, and lithium ion secondary battery (2025-10-28),
2. 12431494 - Nickel manganese cobalt composite hydroxide, method for producing nickel manganese cobalt composite hydroxide, lithium nickel manganese cobalt composite oxide, and lithium ion secondary battery (2025-09-30),
3. 12381215 - Nonaqueous electrolyte secondary battery positive electrode active material and method for producing same, and nonaqueous electrolyte secondary battery which uses positive electrode active material (2025-08-05),
4. 12381214 - Non-aqueous electrolyte secondary battery positive electrode active material and method for producing same, and non-aqueous electrolyte secondary battery which uses positive electrode active material (2025-08-05),
5. 12261291 - Positive electrode active material for lithium ion secondary battery, method of manufacturing positive electrode active material for lithium ion secondary battery, and lithium ion secondary battery (2025-03-25),
6. 12249708 - Positive electrode active material for nonaqueous electrolyte secondary battery, method for producing the same, positive electrode mixture paste for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery (2025-03-11),
7. 11996556 - Positive electrode active material for non-aqueous electrolyte secondary battery and method for producing the same, positive electrode mixture paste for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery (2024-05-28),
8. 11973223 - Manganese composite hydroxide and process for producing same, positive electrode active material and process for producing same, and non-aqueous electrolyte secondary battery (2024-04-30),
9. 11967709 - Nonaqueous electrolyte secondary battery positive electrode active material and method for producing same, and nonaqueous electrolyte secondary battery which uses positive electrode active material (2024-04-23),
10. 11949102 - Positive electrode active material precursor for nonaqueous electrolyte secondary battery and method for manufacturing positive electrode active material precursor for nonaqueous electrolyte secondary battery (2024-04-02),
11. 11909039 - Nickel-containing composite hydroxide and production process thereof (2024-02-20),
12. 11862793 - Positive electrode active material for non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery and method for producing the same (2024-01-02),
13. 11855283 - Method for evaluating a characteristic of a nonaqueous electrolyte secondary battery positive electrode active material (2023-12-26),
14. 11784310 - Non-aqueous electrolyte secondary battery positive electrode active material, method for producing same, and non-aqueous electrolyte secondary battery which uses positive electrode active material (2023-10-10),
15. 11637284 - Positive electrode active material for non-aqueous electrolyte secondary batteries, production method therefor, and non-aqueous electrolyte secondary batteries using said positive electrode active material (2023-04-25),

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