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Tsutomu Udagawa

USPTO Granted Patents = 17

EPO Patents = 4 (Patent Applications = 3)

Average Co-Inventor Count = 3.9

ph-index = 5

Forward Citations = 81(Granted Patents)

Location History:

Niihari-gun, JP (2003)
Ibaraki-ken, JP (2009)
Tokyo, JP (2014)
Tsuchiura, JP (2015)
Ibaraki, JP (2002 - 2019)
Tsukuba, JP (2007 - 2024)

Company Filing History:

17 out of 1,498

Hitachi Construction Machinery Co., Ltd.

Years Active: 2002-2024

where 'Filed Patents' based on already Granted Patents

17 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12152374 - Construction machine (2024-11-26),

2. 12077944 - Construction machine (2024-09-03),

3. 11274418 - Hydraulic work machine (2022-03-15),

4. 10400797 - Hydraulic control system for working machine (2019-09-03),

5. 10330128 - Hydraulic control system for work machine (2019-06-25),

6. 10060450 - Hydraulic control device for work machine (2018-08-28),

7. 9695841 - Hydraulic closed circuit system (2017-07-04),

8. 9212469 - Work machine (2015-12-15),

9. 9103093 - Rotation control device of working machine (2015-08-11),

10. 8818649 - Rotation control device for working machine (2014-08-26),

11. 8585156 - Travel control device for work vehicle and work vehicle (2013-11-19),

12. 8146691 - Travel drive system for work vehicle, work vehicle, and travel drive method (2012-04-03),

13. 7712565 - HST travel system for working machine (2010-05-11),

14. 7500360 - Hydraulic driving system of construction machinery (2009-03-10),

15. 7175155 - Control valve apparatus and pressure circuit (2007-02-13),

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