Inventor · disambiguated record
David W. Johnsen
Also filed as: JOHNSEN DAVID · JOHNSEN DAVID W
22 granted patents·542 citations·filing 1975–2018
95Inventor score
Top patents by PatentIndex Score
22 records- 0198US10247643B1System, method, and apparatus for determining air emissions during pig receiver depressurizationMARKWEST ENERGY PARTNERS L P·Filed 2018·Granted Apr 2, 2019·38 cites·24 claims
- 0298US10168255B1System, method, and apparatus for determining air emissions during pig receiver depressurizationMARKWEST ENERGY PARTNERS L P·Filed 2018·Granted Jan 1, 2019·31 cites·8 claims
- 0398US10024768B1System, method, and apparatus for determining air emissions during pig receiver depressurizationMARKWEST ENERGY PARTNERS L P·Filed 2017·Granted Jul 17, 2018·39 cites·17 claims
- 0498USD263058SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1979·Granted Feb 16, 1982·200 cites·1 claims
- 0598USD243084SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted Jan 18, 1977·189 cites·1 claims
- 0677US8500853B2Gas purification system and method for liquefaction of dilute gas componentsROOD MARK J·Filed 2010·Granted Aug 6, 2013·5 cites·19 claims
- 0770US8636829B2Gas purification system for liquefaction of dilute gas componentsUNIV ILLINOIS·Filed 2013·Granted Jan 28, 2014·2 cites·15 claims
- 0852USD253480SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1978·Granted Nov 20, 1979·4 cites·1 claims
- 0951USD244447SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted May 24, 1977·4 cites·1 claims
- 1051USD243762SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted Mar 22, 1977·4 cites·1 claims
- 1151USD243395SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted Feb 15, 1977·4 cites·1 claims
- 1249US8940077B2Indirect real-time monitoring and control of electrical resistively heated adsorbent systemUNIV ILLINOIS·Filed 2013·Granted Jan 27, 2015·0 cites·13 claims
- 1347USD253954SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1978·Granted Jan 15, 1980·3 cites·1 claims
- 1447USD246656SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1976·Granted Dec 13, 1977·3 cites·1 claims
- 1546USD248861SSpectacles frame frontAMERICAN OPTICAL CORP·Filed 1977·Granted Aug 8, 1978·3 cites·1 claims
- 1646USD244603SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted Jun 7, 1977·3 cites·1 claims
- 1746USD243396SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1975·Granted Feb 15, 1977·3 cites·1 claims
- 1842USD253479SSpectacles frame frontAMERICAN OPTICAL CORP·Filed 1978·Granted Nov 20, 1979·2 cites·1 claims
- 1942USD252813SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1977·Granted Sep 4, 1979·2 cites·1 claims
- 2041USD252882SSpectacles frame frontAMERICAN OPTICAL CORP·Filed 1977·Granted Sep 11, 1979·2 cites·1 claims
- 2136USD243397SSpectacle frame frontAMERICAN OPTICAL CORP·Filed 1976·Granted Feb 15, 1977·1 cites·1 claims
- 2232USD247910SPair of spectaclesAMERICAN OPTICAL CORP·Filed 1977·Granted May 16, 1978·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →