Company Filing History:

27 out of 42,485

Hitachi, Ltd.

patents

2 out of 149

Hitachi Microcomputer Engineering, Ltd.

patents

1 out of 182

Hitachi Vlsi Engineering Corp.

patents

where one patent can have more than one assignee

Years Active: 1976-1998

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27 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5808951 - Semiconductor memory (1998-09-15),

2. 5732037 - Semiconductor memory (1998-03-24),

3. 5689457 - Semiconductor Memory (1997-11-18),

4. 5448520 - Semiconductor memory (1995-09-05),

5. 5383080 - Semiconductor integrated circuit having voltage limiter circuit (1995-01-17),

6. 5365478 - Semiconductor memory (1994-11-15),

7. 5323033 - Single chip IC device having gate array or memory with gate array and (1994-06-21),

8. 5278839 - Semiconductor integrated circuit having self-check and self-repair (1994-01-11),

9. 5187685 - Complementary MISFET voltage generating circuit for a semiconductor (1993-02-16),

10. 5157629 - Selective application of voltages for testing storage cells in (1992-10-20),

11. 5119332 - Semiconductor memory (1992-06-02),

12. 4893157 - Semiconductor device (1990-01-09),

13. 4860255 - Semiconductor memory (1989-08-22),

14. 4839865 - Selective application of voltages for testing storage cells in (1989-06-13),

15. 4839860 - Semiconductor device having head only memory with differential amplifier (1989-06-13),

Title: **Hiroshi Kawamoto: Innovator in Semiconductor Memory Technology**

Introduction:

Hiroshi Kawamoto is a distinguished inventor based in Kodaira, Japan, known for his significant contributions to semiconductor memory technology. With a total of 27 patents to his name, he has played a pivotal role in advancing the efficiency and functionality of dynamic RAM integrated circuits.

Latest Patents:

One of Hiroshi Kawamoto's latest inventions is a dynamic RAM integrated circuit designed with a one-element memory cell type. This innovative circuit is equipped with a plurality of data lines and a sense amplifier, along with multiple word lines that intersect with the data lines. Memory cells are strategically placed at the intersections of these lines. The unique design features a P-type semiconductor substrate and an N-type well region formed within the substrate. The memory cells are placed in this well, while the sense amplifier connects to the data lines, utilizing a pair of N-channel MOSFETs created in the substrate and a pair of P-channel MOSFETs situated in the well region.

Career Highlights:

Throughout his career, Hiroshi has worked with prominent companies in the technology sector, including Hitachi, Ltd. and Hitachi Microcomputer Engineering, Ltd. His tenure in these organizations has allowed him to harness his skills and knowledge in semiconductor technology, making notable advancements in the industry.

Collaborations:

Hiroshi Kawamoto has collaborated with various talented individuals during his career. Among his notable coworkers are Katsuhiro Shimohigashi and Hiroo Masuda, who have also contributed to the field of semiconductor technology.

Conclusion:

Hiroshi Kawamoto's expertise and innovation in semiconductor memory have made a lasting impact on technology. His continuous efforts and contributions through his patents are a testament to his dedication to the field, inspiring future generations of inventors and engineers.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.