Sei Shimahara

This inventor holds 8 USPTO granted patents and 3 published patent applications and 2 EPO patents. Top assignee: Caterpillar Sarl. Active years: 2011-2026.

USPTO Granted Patents = 8 (Patent Applications = 3)

% Patents Active = 62.5

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 22(Granted Patents)

Location History:

Tokyo, JP (2011 - 2016)
Akashi, JP (2023)

Company Filing History:

8 out of 291

Caterpillar Sarl

patents

Years Active: 2011-2026

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12534878 - Drive control device for fluid pressure cylinder (2026-01-27),

2. 11781287 - Hydraulic circuit for a construction machine (2023-10-10),

3. 9309649 - Work machine (2016-04-12),

4. 9103095 - Hydraulic circuit control device and work machine (2015-08-11),

5. 8899035 - Hydraulic control apparatus for work machine (2014-12-02),

6. 7958907 - Fluid pressure circuit (2011-06-14),

7. 7930970 - Control unit for work machine (2011-04-26),

8. 7926411 - Valve control unit (2011-04-19),

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3 patents pending:

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2 patents (EPO):

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2 patents pending (EPO):

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