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Class Information
Number: 356/4
Name: Optics: measuring and testing >
Description:










Sub-classes under this class:

Class Number Class Name Patents
356/121 Lamp beam direction or pattern 380
356/123 Focal position of light source 93
356/124 Lens or reflective image former testing 621
356/128 Refraction testing (e.g., refractometers) 339
356/138 Angle measuring or angular axial alignment 517
356/2 Contour plotting 142
356/213 Photometers 201
356/23 Motion stopping (e.g., stroboscopes) 59
356/237.1 Inspection of flaws or impurities 1,396
356/242.1 Thread counting 6
356/243.1 Standard 305
356/244 Sample, specimen, or standard holder or support (e.g., plates or slides) 941
356/247 Fiducial instruments 96
356/256 Miscellaneous 76
356/27 Velocity or velocity/height measuring 83
356/29 Optical element or reticle responds to relative velocity of remote object 33
356/3 Range or remote distance finding 206
356/30 Crystal or gem examination 217
356/300 By dispersed light spectroscopy 551
356/32 Material strain analysis 268
356/335 For size of particles 347
356/337 By particle light scattering 441
356/344 By electrophoresis 271
356/36 With sample preparation 366
356/364 By polarized light examination 798
356/388 By configuration comparison 99
356/39 Blood analysis 1,024
356/399 By alignment in lateral direction 796
356/402 By shade or color 630
356/426 By inspection with agitation or rotation 118
356/429 By monitoring of webs or thread 404
356/43 Optical pyrometers 217
356/432 For light transmission or absorption 1,050
356/445 Of light reflection (e.g., glass) 1,624
356/450 By light interference (e.g., interferometer) 560
356/51 Infrared and ultraviolet 372
356/52 Egg candling 20
356/600 Surface roughness 376
356/601 Shape or surface configuration 869
356/614 Position or displacement 1,255
356/625 Dimension 505
356/69 Cutting blade sharpness 4
356/70 Oil testing (e.g., contamination) 131
356/71 Document pattern analysis or verification 830
356/72 With plural diverse test or art 564
356/73 Plural test 1,019
356/73.1 For optical fiber or waveguide inspection 1,535
356/900 Interferometers (go1b 9/02) 2
356/904 Measuring microscopes (go1b 9/04) 7
356/905 Measuring telescopes (go1b 9/06) 0
356/906 Optical projection comparators, e.g., for profile (go1b 9/08) 0
356/907 Goniometers (go1b 9/10) 3
356/908 Measuring length, width, or thickness (go1b 11/02) 6
356/911 Measuring the deformation in a solid, e.g., optical strain gauge (go1b 11/16) 0
356/912 Measuring angles (go1c 1/00) 1
356/916 Altimeters for aircraft (go1c 5/00a) 1
356/917 Measuring inclination, e.g., by clinometers, by levels (go1c 9/00) 0
356/918 Photogrammetry; photographic surveying (go1c 11/00) 2
356/922 Photometry, e.g., photographic exposure meter (go1j 11/04) 1
356/923 Radiation pyrometry (golj 5/00) 0
356/924 Measuring velocity of light (golj 7/00) 0
356/925 Measuring optical phase difference: measuring optical wavelength (go1j 9/00) 7
356/926 Measuring the characteristics of individual optical pulses or of optical pulse trains (go1j 11/00) 2
356/927 Measuring variations of optical properties of material when it is stressed, e.g., by photoelastic stress analysis using infra-red, visible light, ultra-violet (go1l 1/24) 5
356/928 Investigating or analyzing materials by the use of optical means, i.e., using infra-red, visible, or ultra-violet light (go1n 21/00) 14
356/955 Measuring linear or angular speed utilizing devices characterized by the use of optical means, e.g., using infra-red, visible, or ultra-violet light (go1p 3/36) 1


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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