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  • [发明专利]US19840658339 _ GENENTECH, INC. 1984年10月05日
    Periplasmic proteins are recovered from transformed gram negative bacteria by a process comprising freezing and thawing the cells. Advantages are obtained by culturing the cells in phosphate-limiting media and by killing the cells prior to separation ...
  • [发明专利]US19840573903 _ PERFORMANCE CONTROLS COMPANY 1984年01月26日
    An apparatus for use with an amplifier regulates the current through a load according to a drive signal having first and second states and comprises switchless sensing means and polarity correction means. The switchless sensing means provides a sense ...
  • 3.
    [发明专利]JP19840176561 _ NIPPON ELECTRIC CO 1984年08月27日
    PURPOSE:To prevent an increase in noise level by providing a means which detects and stores the background noise level in a room when there is no call made, applying a residual signal to an echo signal generating circuit through a gate circuit, and in...
  • [发明专利]JP19840176561 _ NEC CORP 1984年08月27日
    PURPOSE:To prevent an increase in noise level by providing a means which detects and stores the background noise level in a room when there is no call made, applying a residual signal to an echo signal generating circuit through a gate circuit, and in...
  • [发明专利]JP19840263899 _ AJINOMOTO CO INC 1984年12月14日
    PURPOSE:To produce the titled element having switching function, by covering the surface of an electrically conductive solid substrate or a semiconductive substrate with monomolecular layer or several-molecular layer of cytochrome C3 oriented to a def...
  • [发明专利]JP19840052077 _ CANON KK 1984年03月21日
    PURPOSE:To form a uniform monomolecular membrane having uniform molecular arrangement and no flaw, by providing a vibration generating means for vibrating the molecule group developed to the liquid surface in a film forming development liquid tank. CO...
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