Hitachi, Ltd Patent Portfolio Statistics

Hitachi, Ltd.

Profile Summary

This article summarizes the perfomance of the assignee in the recent years. The overall statistics for this portfolio help to analyze the areas where the assignee is performing well. The filing trend, perfomance across the tech centers and the perfomance of the recent applications has been mentioned below. All the stats are calculated based on the perfomance in USPTO.

How does the overall patent portfolio of Hitachi, Ltd. look like?

Assignee Art Units
Total Applications: 29,498 2,385,523
Granted Patents: 22,287 1,614,493
Grant Index 78.27% 80.52%
Abandoned/Rejected Applications: 6,187 (21.73%) 390,603 (19.48%)
In-Process Applications: 1,001 380,427
Average Grant Time: 2.86 Years 2.64 Years
Average Office Actions: 1.37 1.45

Which Technology Area Hitachi, Ltd. is filing most patents in? (Last 10 years)

Art Unit Definition Total Applications
2627 Selective Visual Display Systems 545
2818 Semiconductors/Memory 534
3747 Thermal & Combustion Technology, Motive & Fluid Power Systems 475
2871 Optics 458
2881 Optics 452

How many patents are Hitachi, Ltd. filing every year?

Year Total Applications Predicted
2022 1* 1189
2021 324* 1046
2020 605 993
2019 586 586
2018 601
2017 559
2016 624
2015 755
2014 720
2013 790

*The drop in the number of applications filed in last two years compared to previous years is because applications can take up to 18 months to get published

Recently filed patent applications of Hitachi, Ltd. in USPTO?

Publication number: US20220220694A1
Application number: 17/434,491

In a hydraulic excavator including a main controller that can execute area restriction control, the main controller is configured to calculate an operation velocity Vfx of a front work device in a machine body coordinate system and a movement velocity (dragging velocity) Vu of a machine body in a gravity coordinate system and correct a direction of a calculated target velocity vector Vt upward away from a construction target surface when generation of dragging is detected during execution of the area restriction control based on the calculated operation velocity Vfx of the front work device 2 and the calculated movement velocity Vu of the machine body.

Publication date:
Applicant: Hitachi, Ltd.
Inventors: Suzuki Yusuke

Publication number: None
Application number: 17/691,928


Publication date:
Applicant: Hitachi, Ltd.
Inventors: Fujimoto Masao

Publication number: US20220229113A1
Application number: 17/417,453

This power conversion device has: a current measurement unit for measuring phase current; a current vector calculation unit for calculating a current vector by performing 3-phase to 2-phase conversion on the phase current; an amount-to-be-analyzed calculation unit for calculating, on the basis of the current vector, an amount to be analyzed; and a feature amount waveform extraction unit for extracting a waveform in a specific frequency range on the basis of the amount to be analyzed.

Publication date:
Applicant: Hitachi, Ltd.
Inventors: Kohji Maki

How are Hitachi, Ltd.’s applications performing in USPTO?

Application Number Title Status Art Unit Examiner
17/434,491 Work Machine Docketed New Case – Ready for Examination OPAP Central, Docket
17/691,928 Electric Drive Device And Electric Power Steering Device Docketed New Case – Ready for Examination 3992 Whittington, Kenneth
17/417,453 Power Conversion Device, Rotating Machine System, And Diagnosis Method Application Dispatched from Preexam, Not Yet Docketed 2837
17/418,966 Electronic Control Device And Usage Of Non-Volatile Memory Docketed New Case – Ready for Examination OPAP Central, Docket
17/420,075 Database Management Service Provision System Docketed New Case – Ready for Examination OPAP Central, Docket