Takenaka Komuten Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6454286 Traveling device for smooth and stable movement on uneven and inclined surfacesExpiredJul 23, 01Sep 24, 02[A61G]
5009713 Cement composition and a process for preparation thereofExpiredFeb 13, 87Apr 23, 91[C04B]
4956403 Suppression of pressure water absorption of lightweight aggregate by aqueous dispersion therein of anionic polymersExpiredNov 02, 87Sep 11, 90[C08K]
4909329 Fire supervising system and extinguishing target determining systemExpiredAug 24, 87Mar 20, 90[A62C]
4843832 Air conditioning system for buildingsExpiredFeb 04, 88Jul 04, 89[F25B, F25D]
4805359 Method of applying floor vibration-damping work and vibration-damping floor deviceExpiredSep 21, 87Feb 21, 89[E04H]
4801090 Discharge pipe and discharge apparatus using the sameExpiredOct 07, 86Jan 31, 89[A62C]
4796439 Air conditioning systemExpiredOct 28, 87Jan 10, 89[F25B]
4770257 Method of preventing loss of drilling mud during boring a hole in the groundExpiredJan 23, 87Sep 13, 88[E01D, E21B]
4753036 Indoor multiple-purpose hydroponic cultivation planterExpiredMar 03, 87Jun 28, 88[A01G]
4749862 Scanning fire-monitoring systemExpiredApr 23, 86Jun 07, 88[G01J]
4743301 Concrete composition for underwater useExpiredJul 26, 85May 10, 88[C04B]
4721159 Method and device for conveying chemicals through boreholeExpiredNov 04, 86Jan 26, 88[E21B]
4706753 Method and device for conveying chemicals through boreholeExpiredNov 04, 86Nov 17, 87[E21B]
4693637 Gravity type oceanic structure and its stable installationExpiredNov 26, 85Sep 15, 87[E02B]
4692065 Offshore unit structureExpiredAug 26, 85Sep 08, 87[E02B, E02D]
4676152 Apparatus for fruit fly disinfestation using hot humid air in order to prevent the spread of infestation in fruits and vegetablesExpiredDec 03, 85Jun 30, 87[A23L]
4643617 Method of creating offshore seabed moundExpiredMay 08, 85Feb 17, 87[E02D]
4615215 Method and apparatus for testing ready-mixed concreteExpiredMar 30, 84Oct 07, 86[G01N]
4588124 Heat-exchanging system for an enclosed spaceExpiredOct 03, 84May 13, 86[F24D]

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