Company Filing History:

19 out of 2,002

Citizen Watch Company, Ltd.

patents

1 out of 1

Technical Research of Citizen Watch Co., Ltd.

where one patent can have more than one assignee

Years Active: 1978-2004

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20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6774513 - Two-pole step motor for timepiece (2004-08-10),

2. 6548922 - 2-Pole stepper motor for timepiece (2003-04-15),

3. 6519853 - Method of manufacturing hand for analog electronic timepiece (2003-02-18),

4. 6434086 - Analog electronic timepiece (2002-08-13),

5. 6221173 - Titanium or titanium alloy member and surface treatment method therefor (2001-04-24),

6. 5782995 - Solar battery device and method of fabricating the same (1998-07-21),

7. 5762110 - Dents for reed in high-speed weaving machine, and method of (1998-06-09),

8. 5714012 - Solar battery device (1998-02-03),

9. 5642632 - Coated knitting parts of knitting machine (1997-07-01),

10. 5546770 - Knitting parts of knitting machine (1996-08-20),

11. 5538799 - Knitting parts of knitting machine (1996-07-23),

12. 5511587 - Wear-resistant reed for a high-speed loom (1996-04-30),

13. 5056929 - Temperature compensation type infrared sensor (1991-10-15),

14. 4482216 - Solid state complementary electrochromic display devices (1984-11-13),

15. 4465341 - All solid state complementary electrochromic display devices (1984-08-14),

Title: Takanori Nanya: Innovator in Timepiece Technology

Introduction

Takanori Nanya, based in Sayama, Japan, is a prominent inventor with a significant contribution to the field of timepiece technology. With 20 patents to his name, Nanya has demonstrated exceptional innovation in developing advanced motor technologies.

Latest Patents

Among his latest innovations are two remarkable patents related to two-pole step motors specifically designed for timepieces. The first patent describes a stator made by bonding two high-permeability stator parts through intermediary connections made of a low-permeability or non-magnetic material. This design includes paired recesses that serve as holding torque setting means for a rotor, which is held by magnetic action. Additionally, a field coil for excitation is magnetically bonded to the opposite ends of the stator, forming a highly efficient two-pole step motor suitable for precise timekeeping. The second patent mirrors this innovation, reiterating the efficacy of such a design for timepiece applications.

Career Highlights

Takanori Nanya has had a fruitful career, working with prestigious organizations such as Citizen Watch Company, Ltd. and Technical Research of Citizen Watch Co., Ltd. His expertise in the field led to the creation of several patents that have elevated the standards of mechanical watch movements and timekeeping devices.

Collaborations

During his career, Nanya collaborated with other talented individuals, including Eigo Hashimoto and Katsuo Nishimura. This teamwork has played a pivotal role in advancing innovative solutions within the timepiece sector, enriching the collective knowledge and creativity of their projects.

Conclusion

Takanori Nanya’s work exemplifies how innovative thinking can reshape the technological landscape of timepieces. His numerous patents not only showcase his ingenuity but also highlight the collaborative efforts within the industry. As Nanya continues to innovate, his contributions will undeniably impact the future of watch technology.

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