Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/358
Name: Education and demonstration > Question or problem eliciting response > Grading of response form > Light detector sensing response
Description: Subject matter wherein the examinee"s response is detected by light sensitive means (e.g., a photocell, etc.)










Patents under this class:

Patent Number Title Of Patent Date Issued
8155578 Method and system for generating and processing an assessment examination Apr. 10, 2012
7864986 Optical mark reading that uses a disregard state as part of an unambiguous symbology of marks to fill into response bubbles Jan. 4, 2011
7555145 Multi-level optical mark reading that uses an unambiguous symbology of marks to fill into response bubbles Jun. 30, 2009
7516180 System and method for providing instructor services using a plurality of client workstations connected to a central control station Apr. 7, 2009
7298901 Scannable form and system Nov. 20, 2007
6879805 Test form having a removable opaque layer, and method and apparatus for printing on the form Apr. 12, 2005
6729881 Electronic educational toy appliance and a portable memory device therefor May. 4, 2004
6684052 Scanning system for imaging and storing the images of test answer sheets having open-ended questions Jan. 27, 2004
6366760 Method for imaging test answer sheets having open-ended questions Apr. 2, 2002
6210171 Method and apparatus for multiple choice testing system with immediate feedback for correctness of response Apr. 3, 2001
6178308 Paper based intermedium for providing interactive educational services Jan. 23, 2001
6173154 System and method for imaging test answer sheets having open-ended questions Jan. 9, 2001
6011949 Study support system Jan. 4, 2000
5711673 Method for interpreting a plurality of response marks on a scannable surface Jan. 27, 1998
5597311 System for making examination papers and having an automatic marking function Jan. 28, 1997
5453600 Machine readable code combining preprinted indicia with hand-mark data Sep. 26, 1995
5452379 Image capture and storage techniques in association with optical mark reading Sep. 19, 1995
5420407 Adjustable read level threshold for optical mark scanning May. 30, 1995
5399845 Optical data detecting apparatus and method Mar. 21, 1995
5331137 Machine readable code combining preprinted indicia with hand-mark data Jul. 19, 1994
5154616 Answer sheet covering device Oct. 13, 1992
5085587 Scannable form and system Feb. 4, 1992
5084819 Data collection, analysis, and response system and method Jan. 28, 1992
5046005 Test scoring machine Sep. 3, 1991
5011413 Machine-interpretable figural response testing Apr. 30, 1991
4978305 Free response test grading method Dec. 18, 1990
4547161 Apparatus and method for Cloze-Elide testing Oct. 15, 1985
4303399 Test scoring card and method of employing same Dec. 1, 1981
4259667 Information interchange between an intelligent operator, indicia bearing documents, and responsive apparatus Mar. 31, 1981
4243876 Background light intensity compensation circuit for a line scan camera system Jan. 6, 1981
4217487 Self-calibrating apparatus for photoelectrically scanning answer documents Aug. 12, 1980
4162408 Optical mark sense detector Jul. 24, 1979
4002888 Test form for use with a test scoring apparatus Jan. 11, 1977
3995381 Low visibility answer sheet and method of testing Dec. 7, 1976
3983364 Apparatus utilizing analog-to-digital conversion in the photoelectric reading of documents Sep. 28, 1976











 
 
  Recently Added Patents
Cross-linkable compositions
Method and system for security authentication of radio frequency identification
Proximity-based mobile message delivery
Thwarting keyloggers using proxies
Nonvolatile semiconductor memory device and method for controlling the same
Virtual links in a routed ethernet mesh network
Manufacturing method for semiconductor device carrier and semiconductor package using the same
  Randomly Featured Patents
Hypodermic needle guard
Operator sensing circuit for disabling motor of power equipment
Dual chambered fluid dispenser with mixing chamber
Methods and apparatus to change the mobility of formation fluids using thermal and non-thermal stimulation
Dual large angle light scattering detection
Levitationarium for air flotation of humans
Automotive thermostatic expansion valve with reduced hiss
Process and composition for sealing anodized aluminum surfaces
Battery terminals
Deep-sea fisherman's chair