Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 355/38
Name: Photocopying > Projection printing and copying cameras > Multicolor picture > Regulating light intensity or exposure time > Including
Description: Subject matter including a photocell or photomultiplier tube and related electrical circuitry to detect the intensity of light in some part of the optical path.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
4080066 Apparatus for prereading film frames or the like Mar. 21, 1978
4079388 Illumination detecting and recording method and device therefor Mar. 14, 1978
4076414 Motion picture printing apparatus Feb. 28, 1978
4068943 Additive color printer control Jan. 17, 1978
4066355 Solid-state color-copying scanner Jan. 3, 1978
4050808 Additive color printing method and apparatus Sep. 27, 1977
4039258 Method and apparatus for making reproductions of photograhic copy negatives or the like Aug. 2, 1977
4030833 Color filter determining apparatus Jun. 21, 1977
4025189 Preparation of half-tone images May. 24, 1977
4017179 Automatic density control Apr. 12, 1977
4017178 Apparatus for detecting a malfunction in a color connecting light valve of a film printer Apr. 12, 1977
3985450 Color filter determining apparatus with indication of the color components to be balanced Oct. 12, 1976
3984185 Process and apparatus for filter value and exposure time determination in photographic color printing and enlarging Oct. 5, 1976
RE28771 Translator for measuring amount of color correction for color Apr. 13, 1976
3947110 Automatic photograph printing control system Mar. 30, 1976
3944362 Method and apparatus for determining the time intensity integral of the exposure of a negative onto photographic paper Mar. 16, 1976

1 2 3 4 5 6 7 8

  Recently Added Patents
Air driven alternators for battery powered vehicles
Information repository search system
Ice data collection system
Method and apparatus for sensing an input object relative to a sensing region of an ultrasound sensor device
Compositions and methods for activating innate and allergic immunity
Cabinet door with tread pattern
Method of measuring the flux of a soil gas
  Randomly Featured Patents
Silicone rubber compositions incorporating silicon-treated carbon blacks
Bevel locking system for a sliding compound miter saw
High frequency magnetic field coupling arc plasma reactor
Mount adjustable end cap clamp lock for lighting systems
Method for producing cathode active material for non-aqueous electrolyte secondary battery
Rolling guiding device
Apparatus for removing bilge water out of a boat
Test vehicle tracking system
Method and apparatus for a disk clamp used in a hard disk drive that reduces mechanical deformation on at least one disk from tightened screws through the disk clamp
Solid-state image capturing device, smear charge removing method and digital still camera using the same