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Optical element
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Patent number 8,179,605
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Issue date May 15, 2012
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Panasonic Corporation
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Toshiaki Takano
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Press-molding mold
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Patent number 7,252,495
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Issue date Aug 7, 2007
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Hon Hai Precision Industry Co., Ltd.
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Tsung-Wei Chiang
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C03 - GLASS MINERAL OR SLAG WOOL
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Method of molding optical articles
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Patent number 5,904,747
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Issue date May 18, 1999
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Matsushita Electric Industrial Co., Ltd.
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Hidenao Kataoka
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C03 - GLASS MINERAL OR SLAG WOOL
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Optical element forming method
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Patent number 5,817,161
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Issue date Oct 6, 1998
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Matsushita Electric Industrial Co., Ltd.
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Kazuaki Takagi
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C03 - GLASS MINERAL OR SLAG WOOL
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Method for manufacturing an optical element
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Patent number 5,759,457
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Issue date Jun 2, 1998
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Matsushita Electric Industrial Co., Ltd.
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Kenji Inoue
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Optical element forming method
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Patent number 5,630,859
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Issue date May 20, 1997
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Matsushita Electric Industrial Co., Ltd.
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Kazuaki Takagi
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C03 - GLASS MINERAL OR SLAG WOOL
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Optical element forming apparatus
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Patent number 4,698,089
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Issue date Oct 6, 1987
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Canon Kabushiki Kaisha
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Kenzo Matsuzaka
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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