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특허 상세정보

Method for injection molding lenses

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-011/00   
미국특허분류(USC) 264/2.2 ; 264/328.7 ; 425/808
출원번호 US-0719356 (1976-09-01)
발명자 / 주소
대리인 / 주소
    Blakely, Sokoloff, Taylor & Zafman
인용정보 피인용 횟수 : 58  인용 특허 : 0
초록

A method and apparatus for injection molding thermoplastic lenses, such as prescription eyeglass lenses, in a single injection molding operation into a finished single vision or multifocal blank which does not require additional molding or polishing. Movable optical inserts (dies) are forced apart by injected polycarbonate, then the inserts are urged together forcing a portion of the injected polycarbonate into a pocket.

대표청구항이 없습니다

이 특허를 인용한 특허 피인용횟수: 58

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