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Electret
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Patent number 11,917,919
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Issue date Feb 27, 2024
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Denso Corporation
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Noriyuki Matsushita
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H01 - BASIC ELECTRIC ELEMENTS
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Piezoelectric ceramics
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Patent number 4,392,970
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Issue date Jul 12, 1983
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Matsushita Electric Industrial Co., Ltd.
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Hiromu Ouchi
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Electro-optic ceramic material
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Patent number 3,998,523
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Issue date Dec 21, 1976
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Hitachi, Ltd.
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Yoshiro Otomo
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3868553
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Patent number 3,868,553
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Issue date Feb 25, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3820208
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Patent number 3,820,208
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Issue date Jun 28, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3808364
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Patent number 3,808,364
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Issue date Apr 30, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3806642
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Patent number 3,806,642
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Issue date Apr 23, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3766073
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Patent number 3,766,073
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Issue date Oct 16, 1973
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3761746
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Patent number 3,761,746
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Issue date Sep 25, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3740118
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Patent number 3,740,118
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Issue date Jun 19, 1973
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G02 - OPTICS
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3705312
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Patent number 3,705,312
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Issue date Dec 5, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3696505
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Patent number 3,696,505
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Issue date Oct 10, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3666666
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Patent number 3,666,666
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Issue date May 30, 1972
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3652413
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Patent number 3,652,413
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Issue date Mar 28, 1972
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3649540
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Patent number 3,649,540
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Issue date Mar 14, 1972
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3612656
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Patent number 3,612,656
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Issue date Oct 12, 1971
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G02 - OPTICS
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3580846
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Patent number 3,580,846
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Issue date May 25, 1971
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3569822
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Patent number 3,569,822
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Issue date Mar 9, 1971
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3549536
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Patent number 3,549,536
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Issue date Dec 22, 1970
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3546120
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Patent number 3,546,120
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Issue date Dec 8, 1970
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3531412
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Patent number 3,531,412
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Issue date Sep 29, 1970
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3528918
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Patent number 3,528,918
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Issue date Sep 15, 1970
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES