Tekken Construction Co., Ltd.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Tekken Construction Co., Ltd..The latest application filed is for "form assembly for making covering wall of tunnel made by shield type excavator".

Company Profile

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Tekken Construction Co., Ltd. - JP JP
Tekken Construction Co., Ltd. - both of JP
Tekken Construction Co., Ltd. - Tokyo JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Form assembly for making covering wall of tunnel made by shield type excavator Grant 4,913,587 - Kumai , et al. April 3, 1	1990-04-03
Method for lining tunnel wall formed by shield excavation Grant 4,863,313 - Yamamoto , et al. September 5, 1	1989-09-05
Method of making covering wall of tunnel made by shield type excavator Grant 4,799,824 - Kumai , et al. January 24, 1	1989-01-24
Automatic fire extinguisher with infrared ray responsive type fire detector Grant 4,671,362 - Odashima June 9, 1	1987-06-09
Automatic fire extinguisher with infrared ray responsive type fire detector Grant 4,648,462 - Odashima March 10, 1	1987-03-10
Shield type hydraulic tunnel boring machine Grant 4,167,290 - Yamazaki , et al. September 11, 1	1979-09-11
Device for removing gravels and the like from discharged mud in hydraulic tunnel boring system Grant 4,116,487 - Yamazaki , et al. September 26, 1	1978-09-26
Automatic tunnel face hydraulic pressure controlling apparatus in shield type hydraulic tunnel boring system Grant 4,068,486 - Uchida , et al. January 17, 1	1978-01-17
Method and apparatus for starting a tunneling machine from an initial placement within a vertical shaft sunk into the ground and provided with a starting port Grant 4,041,713 - Iwamitsu , et al. August 16, 1	1977-08-16

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