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Forward Citations = 269

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5 inventors (with patents filed for the assignee):

Yasuyuki Hashimoto (17 out of 17 patents)

Osamu Torii (6 out of 9 patents)

Kazuo Shimizu (6 out of 6 patents)

4. Haruo Yamashita (5 out of 5 patents)

5. Yutaka Kiyohara (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 6095706 - Writing instrument operated by a finger at a holding position (2000-08-01),

2. 5915867 - Capless writing tool (1999-06-29),

3. 5048990 - Writing instrument with drying-preventing mechanism (1991-09-17),

4. 4979839 - Mechanical pencil having an automatic lead extending mechanism (1990-12-25),

5. 4966483 - Valve operating mechanism (1990-10-30),

6. 4911569 - Mechanical pencil with a fluid actuator (1990-03-27),

7. 4629348 - Writing instrument with sealing cap and additional rearward seal (1986-12-16),

8. 4575271 - Writing instrument with movable closure and second sealing means (1986-03-11),

9. 4544295 - Mechanical pencil with self-contained insert (1985-10-01),

10. 4479732 - Writing instrument with sealing cap retained in tip (1984-10-30),

11. 4469462 - Writing instrument with sealing tip (1984-09-04),

12. 4382706 - Mechanical pencil (1983-05-10),

13. 4362410 - Mechanical pencil (1982-12-07),

14. 4358210 - Mechanical pencil with chuck closing by normal writing grip (1982-11-09),

15. 4270870 - Mechanical pencil with chuck closing by normal writing grip (1981-06-02),

Ancos Co., Ltd. is a leading manufacturer of high-quality industrial coatings and sealants. With over 20 years of experience in the industry, Ancos is known for its innovative products and commitment to customer satisfaction. The company's products are used in a wide range of applications, including automotive, aerospace, and construction. Ancos is dedicated to providing top-notch service and solutions to meet the needs of its clients worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

20 Patents

#277 in Osaka

#2,882 in Japan

#30,316 in the World

Osaka, Japan

Ancos Co., Ltd.