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LEVENTHAL PATENTS INC

Overview
  • Total Patents
    25
About

LEVENTHAL PATENTS INC has a total of 25 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets optics and machines are ADOX KAMERAWERK G M B H, KEYSTONE CAMERA COMPANY INC and BALDA WERKE PHOTOGRAPHISCHE.

Patent filings in countries

World map showing LEVENTHAL PATENTS INCs patent filings in countries
# Country Total Patents
#1 United States 19
#2 United Kingdom 3
#3 Germany 2
#4 France 1

Patent filings per year

Chart showing LEVENTHAL PATENTS INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Focus technologies

Top inventors

# Name Total Patents
#1 Leventhal Jacob F 14
#2 Spence Jr John L 2
#3 Mcginty Luther W 1
#4 Leventhal Jacob Frank 1
#5 Greene Percy E 1
#6 Spence Jr John Livingston 1
#7 Samuel Bagno 1

Latest patents

Publication Filing date Title
US2661163A Automatic wind and rewind system for strip materials
US2482197A Motion-picture apparatus of the optical compensating type
US2440776A Motion-picture apparatus of the optical compensating type
US2417002A Optical compensator
US2319092A Slack controller
US2262808A Motion picture apparatus
US2255892A Motion picture apparatus
US2203032A Endless loop film magazine
US2191292A Prefocus projection lamp
US2209698A Motion picture apparatus
GB474273A Improvements in or relating to continuous feed motion picture apparatus
US2067771A Lens obturating device
US2070282A Optical projection system
US2044478A Motion picture film feeding device
US2013350A Motion picture apparatus
US2107039A Ribbon feeding mechanism
US1990791A Adjustable optical system
GB412488A Improvements in or relating to lens systems particularly adapted for use with optical compensators in motion picture apparatus
GB403956A Improvements in or relating to continuous-feed motion picture apparatus provided with optical compensators
US2085594A Optical apparatus