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Class Information
Number: 356/52
Name: Optics: measuring and testing > Egg candling
Description: Subject matter which involves light transmission through eggs, which light may be photoelectrically or visually detected to determine the fertility, freshness or other conditions of the eggs.

Sub-classes under this class:

Class Number Class Name Patents
356/68 Lamp attachments 3
356/53 Photoelectric 37
356/54 With counting, marking, or weighing 6
356/55 With egg transfer 4
356/64 With light box 4
356/62 With light shading chamber 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8098370 Methods and apparatus for maintaining effective operation of apparatus for candling avian eggs Jan. 17, 2012
7965385 Installation for candling eggs and optoelectronic system for examining under radiation such an installation Jun. 21, 2011
7611277 Methods and apparatus for candling avian eggs via thermal cameras Nov. 3, 2009
7573566 Methods and apparatus for maintaining effective operation of apparatus for candling avian eggs Aug. 11, 2009
7545487 Inspection of eggs in the presence of blood Jun. 9, 2009
7474392 Inspection device for objects with a spherical surface Jan. 6, 2009
7336348 Apparatus and method for determining the viability of eggs Feb. 26, 2008
7333187 Methods and apparatus for identifying and diagnosing live eggs using heart rate and embryo motion Feb. 19, 2008
7289196 Method and apparatus for determining the viability of eggs Oct. 30, 2007
7154594 Apparatus and method for determining the viability of eggs Dec. 26, 2006
7019821 Method and apparatus for detecting blood in shell eggs Mar. 28, 2006
6705877 Stackable memory module with variable bandwidth Mar. 16, 2004
6535277 Methods and apparatus for non-invasively identifying conditions of eggs via multi-wavelength spectral comparison Mar. 18, 2003
6488156 Method and system for verification of fertilization of poultry eggs Dec. 3, 2002
6029080 Method and apparatus for avian pre-hatch sex determination Feb. 22, 2000
5900929 Method and apparatus for selectively injecting poultry eggs May. 4, 1999
5520938 Low cholesterol eggs and method of selecting same May. 28, 1996
5321491 Method and apparatus for grading shell eggs Jun. 14, 1994
5132947 Combined memory medium, drive apparatus and method therefor and playback apparatus therefor Jul. 21, 1992
4487321 Article coding and separating system Dec. 11, 1984

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