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Forward Citations = 413

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5 inventors (with patents filed for the assignee):

Kaname Yamamoto (9 out of 10 patents)

Eiichi Tajima (7 out of 11 patents)

Takayoshi Imai (4 out of 4 patents)

4. Enzo L Coltrinari (1 out of 18 patents)

5. Takeshi Saito (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 4636414 - Laminated bituminous roofing membrane (1987-01-13),

2. 4374687 - Process for making a built-up thermal insulating and bituminous (1983-02-22),

3. 4357377 - Thermal insulating and bituminous waterproofing board and application (1982-11-02),

4. 4248926 - Flashing sheet (1981-02-03),

5. 4091135 - Laminated bituminous roofing membrane (1978-05-23),

6. 4055453 - Process for producing laminated bituminous roofing membrane (1977-10-25),

7. 4045265 - Combined application process of thermal insulation and built-up roofing (1977-08-30),

8. 4039706 - Laminated bituminous roofing membrane (1977-08-02),

9. 4029741 - Recovery of antimony sulfides (1977-06-14),

10. 3937640 - Process for manufacturing a waterproofing assembly of laminated (1976-02-10),

Tajima Roofing Co., Ltd. is a leading roofing company specializing in commercial and residential roofing services. With over 20 years of experience, we provide high-quality roofing solutions using the latest technology and materials. Our team of expert roofers is dedicated to delivering superior craftsmanship and exceptional customer service. Contact us for all your roofing needs.

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USPTO Data Jan 1 1976 - Dec 9 2025

10 Patents

#1,690 in Tokyo

#4,283 in Japan

#54,238 in the World

Tokyo, Japan

Tajima Roofing Co., Ltd.