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J A WOOLLAM CO INC

Overview
  • Total Patents
    202
  • GoodIP Patent Rank
    37,535
  • Filing trend
    ⇧ 60.0%
About

J A WOOLLAM CO INC has a total of 202 patent applications. It increased the IP activity by 60.0%. Its first patent ever was published in 1994. It filed its patents most often in United States, EPO (European Patent Office) and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets measurement, optics and computer technology are CHELSEA INSTR LTD, P & P OPTICA INC and BECKMAN RIIC LTD.

Patent filings per year

Chart showing J A WOOLLAM CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liphardt Martin M 93
#2 Johs Blaine D 87
#3 Herzinger Craig M 74
#4 He Ping 62
#5 Woollam John A 49
#6 Pfeiffer Galen L 35
#7 Green Steven E 33
#8 Hale Jeffrey S 33
#9 Welch James D 24
#10 Goeden Christopher A 18

Latest patents

Publication Filing date Title
US10989601B1 Beam focusing and reflective optics
CN112204377A Theta-theta sample positioning stage employing sample mapping using reflectometer, spectrophotometer, or ellipsometer systems
US10466171B1 Method of determining refractive indices and surface properties of prism shaped material
US10627288B1 Systems and methods for producing a more uniform intensity wavelength dispersed beam of electromagnetic radiation entering a multielement detector, while maintaining information content therein
CN111542734A Snapshot ellipsometer
US10422739B1 Reflectometer, spectrophotometer, ellipsometer and polarimeter systems with a super continuum laser source of a beam of electromagnetism, and improved detector system
US10338362B1 Beam focusing and reflecting optics with enhanced detector system
US10175160B1 Method to analyze spectroscopic ellipsometry or intensity data of porous samples utilizing the anisotropic bruggeman-effective medium theory
US10018815B1 Beam focusing and reflective optics
US10606093B1 Biased fast axis retarder system
US10073120B1 Integrated vacuum-ultraviolet, mid and near-ultraviolet, visible, near, mid and far infrared and terahertz optical hall effect (OHE) instrument, and method of use
US9921352B1 Biased fast axis retarder system
US9976902B1 Method to analyze spectroscopic ellipsometry data of porous samples utilizing the anisotropic Bruggeman-effective medium theory
US10061068B1 Deviation angle self-compensating substantially achromatic retarder
US9933357B1 Elliposometer system with polarization state generator and polarization state analyzer in environmental chamber
US9921395B1 Beam focusing and beam collecting optics with wavelength dependent filter element adjustment of beam area
US10132684B1 Reflectometer, spectrophometer, ellipsometer and polarimeter system with a super continuum laser-source of a beam of electromagnetism and improved detector system
US10612976B1 Systems and methods for producing a more uniform intensity wavelength dispersed beam of electromagnetic radiation entering a multi-element detector, while maintaining information content therein
US10066989B1 Information maintenance, intensity attenuation, and angle/plane of incidence control in electromagentic beams
US10859439B1 Reflectometer, spectrophotometer, ellipsometer or polarimeter system including sample imaging system that simultaneously meets scheimpflug condition and overcomes keystone error