Inventor · disambiguated record
John Hart
Also filed as: COLLYER JOHN C · FUOCO ROLLAND P · HART JOHN · HART JOHN A
26 granted patents·4 pending applications·522 citations·filing 1975–2024
97Inventor score
Files withKARSTEN MFG CORP17CANADA MINISTER DEFENCE3UNITED KINGDOM GOVERNMENT3BEIJINGWEST IND CO LTD2HART JOHN A2
Top patents by PatentIndex Score
30 records- 0197US9555294B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2015·Granted Jan 31, 2017·41 cites·6 claims
- 0295US11058930B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2020·Granted Jul 13, 2021·5 cites·18 claims
- 0394US11904217B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2021·Granted Feb 20, 2024·4 cites·20 claims
- 0494US4218779AChemical resistant articleCANADA MINISTER DEFENCE·Filed 1978·Granted Aug 26, 1980·62 cites·19 claims
- 0593US10695625B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2019·Granted Jun 30, 2020·13 cites·20 claims
- 0693US10232232B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2017·Granted Mar 19, 2019·16 cites·20 claims
- 0793US9168432B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2013·Granted Oct 27, 2015·28 cites·17 claims
- 0893US4190696AFlame resistant, gas resistant foam materialCANADA MINISTER DEFENCE·Filed 1978·Granted Feb 26, 1980·47 cites·20 claims
- 0992US4046939AGas resistant foam materialsUNITED KINGDOM GOVERNMENT·Filed 1976·Granted Sep 6, 1977·79 cites·9 claims
- 1091US12161919B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2022·Granted Dec 10, 2024·2 cites·20 claims
- 1191US10413788B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2018·Granted Sep 17, 2019·11 cites·20 claims
- 1290US10300349B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2016·Granted May 28, 2019·11 cites·17 claims
- 1389US11779818B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2021·Granted Oct 10, 2023·2 cites·17 claims
- 1489US11141631B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2019·Granted Oct 12, 2021·5 cites·17 claims
- 1589US10072723B2Closing assembly for a magneto-rheological damperBEIJINGWEST IND CO LTD·Filed 2016·Granted Sep 11, 2018·5 cites·20 claims
- 1687US11213725B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2019·Granted Jan 4, 2022·7 cites·20 claims
- 1786US10543408B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2019·Granted Jan 28, 2020·7 cites·20 claims
- 1885US6314868B1Direct and indirect outdoor cookerEMPIRE COMFORT SYSTEMS INC·Filed 2001·Granted Nov 13, 2001·53 cites·32 claims
- 1982US11491375B2Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2019·Granted Nov 8, 2022·4 cites·20 claims
- 2081US7997393B2Magnetorheological (MR) rod guide assembly and MR damper having sameBWI CO LTD SA·Filed 2008·Granted Aug 16, 2011·10 cites·14 claims
- 2180US10563720B2Closing assembly for a magneto-rheological damperBEIJINGWEST IND CO LTD·Filed 2018·Granted Feb 18, 2020·2 cites·9 claims
- 2279US2025099823A1Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2024·Application pending·0 cites
- 2378US4045609AGas resistant foam materialsUNITED KINGDOM GOVERNMENT·Filed 1976·Granted Aug 30, 1977·36 cites·11 claims
- 2476US4190685AChemical resistant articleCANADA MINISTER DEFENCE·Filed 1978·Granted Feb 26, 1980·40 cites·14 claims
- 2574US2024033587A1Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2023·Application pending·0 cites
- 2673US2024189673A1Golf club heads with turbulators and methods to manufacture golf club heads with turbulatorsKARSTEN MFG CORP·Filed 2024·Application pending·0 cites
- 2766US4153745ASweat resistant gas protective materialUNITED KINGDOM GOVERNMENT·Filed 1978·Granted May 8, 1979·12 cites·4 claims
- 2853US4011068AParticle separatorVICTORIA ELECT COMMISSION·Filed 1975·Granted Mar 8, 1977·17 cites·8 claims
- 2950US2020290173A1Aluminum tank polishing system and method of useHART JOHN A·Filed 2020·Application pending·0 cites
- 3026US4892290ACombination hoist and standHART JOHN A·Filed 1988·Granted Jan 9, 1990·3 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when John Hart files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →