Inventor · disambiguated record
Philip Carl Spengler
Also filed as: SPENGLER PHILIP · SPENGLER PHILIP C · SPENGLER PHILIP CARL
26 granted patents·12 pending applications·41 citations·filing 2004–2023
93Inventor score
Top patents by PatentIndex Score
38 records- 0192US11052332B2Filtration media produced using additive manufacturingCATERPILLAR INC·Filed 2018·Granted Jul 6, 2021·7 cites·10 claims
- 0291US11612841B2Sensing system for detecting machine fluid degradationCATERPILLAR INC·Filed 2021·Granted Mar 28, 2023·2 cites·20 claims
- 0390US11969680B2Filtration media produced using additive manufacturingCATERPILLAR INC·Filed 2021·Granted Apr 30, 2024·2 cites·8 claims
- 0490US11058977B23D printed staged filtration media packsCATERPILLAR INC·Filed 2018·Granted Jul 13, 2021·4 cites·13 claims
- 0589US11673078B2Filter element locking mechanismCATERPILLAR INC·Filed 2020·Granted Jun 13, 2023·2 cites·8 claims
- 0689US11318399B2Locking feature for a filterCATERPILLAR INC·Filed 2020·Granted May 3, 2022·2 cites·4 claims
- 0783US11541334B2Integral filter endcap, mold, and sealCATERPILLAR INC·Filed 2020·Granted Jan 3, 2023·1 cites·8 claims
- 0882US12409399B2Filter element locking mechanismCATERPILLAR INC·Filed 2023·Granted Sep 9, 2025·0 cites·12 claims
- 0982US11318400B2Top and bottom loaded filter and locking mechanismCATERPILLAR INC·Filed 2020·Granted May 3, 2022·1 cites·6 claims
- 1081US12458912B2Filter element locking mechanismCATERPILLAR INC·Filed 2023·Granted Nov 4, 2025·0 cites·11 claims
- 1179US10981335B2Filtration media packs produced using additive manufacturingCATERPILLAR INC·Filed 2019·Granted Apr 20, 2021·1 cites·8 claims
- 1278US9630132B2Fluid filtering systemCATERPILLAR INC·Filed 2014·Granted Apr 25, 2017·4 cites·10 claims
- 1377US12161957B2Integral filter endcap, mold, and sealCATERPILLAR INC·Filed 2022·Granted Dec 10, 2024·0 cites·18 claims
- 1473US2023100847A1Actuated air filter dust valveCATERPILLAR INC·Filed 2022·Application pending·0 cites
- 1572US12121834B2Top and bottom loaded filter and locking mechanismCATERPILLAR INC·Filed 2022·Granted Oct 22, 2024·0 cites·10 claims
- 1672US12090426B2Locking feature for a filterCATERPILLAR INC·Filed 2022·Granted Sep 17, 2024·0 cites·8 claims
- 1771US11110378B2Sensing system for detecting machine fluid degradationCATERPILLAR INC·Filed 2019·Granted Sep 7, 2021·0 cites·19 claims
- 1869US11707892B2Filtration media packs produced using additive manufacturingCATERPILLAR INC·Filed 2021·Granted Jul 25, 2023·0 cites·17 claims
- 1969US11547964B2Actuated air filter dust valveCATERPILLAR INC·Filed 2019·Granted Jan 10, 2023·0 cites·12 claims
- 2068US11986756B23D printed staged filtration media packsCATERPILLAR INC·Filed 2021·Granted May 21, 2024·0 cites·17 claims
- 2166US10590846B2Valve cover extension tube with integrated sensorCATERPILLAR INC·Filed 2017·Granted Mar 17, 2020·1 cites·19 claims
- 2264US7286928B2Wireless communications system for work machine componentsCATERPILLAR INC·Filed 2004·Granted Oct 23, 2007·13 cites·27 claims
- 2362US11173438B2Filter having tracer materialCATERPILLAR INC·Filed 2018·Granted Nov 16, 2021·0 cites·20 claims
- 2462US10315137B2Sensing system for detecting machine fluid degradationCATERPILLAR INC·Filed 2016·Granted Jun 11, 2019·0 cites·9 claims
- 2560US2024207763A1Fluid filter retention mechanismCATERPILLAR INC·Filed 2023·Application pending·0 cites
- 2653US2025128270A1Systems and methods for precleaning air using charge platesCATERPILLAR INC·Filed 2023·Application pending·0 cites
- 2752US9295933B2Filter element and filter assembly having two filtration zonesCATERPILLAR INC·Filed 2014·Granted Mar 29, 2016·0 cites·20 claims
- 2851US8082775B2Systems and methods for simulating an engine environmentSALISBURY CLIFF JAMES·Filed 2008·Granted Dec 27, 2011·1 cites·18 claims
- 2949US2020139283A1Filtration media packs formed using a dissolvable materialCATERPILLAR INC·Filed 2018·Application pending·0 cites
- 3048US10598651B2Sensing system for detecting machine fluid degradationCATERPILLAR INC·Filed 2016·Granted Mar 24, 2020·0 cites·20 claims
- 3147US2020182207A1Sleeve for a filter assemblyCATERPILLAR INC·Filed 2018·Application pending·0 cites
- 3246US2016059172A1Filter element and air cleaner assemblyCATERPILLAR INC·Filed 2014·Application pending·0 cites
- 3346US2020269167A1Fluid filterCATERPILLAR INC·Filed 2019·Application pending·0 cites
- 3444US2024401550A1Dual pre-cleaner air filter designCATERPILLAR INC·Filed 2023·Application pending·0 cites
- 3544US2016052371A1Air cleaner assemblyCATERPILLAR INC·Filed 2014·Application pending·0 cites
- 3638US2006191832A1Dual media fuel filter and fuel/water separator cartridge filter systemRICHIE BRYANT L·Filed 2006·Application pending·0 cites
- 3737US2018276904A1IoT Service Meter Unit TransmitterCATERPILLAR INC·Filed 2017·Application pending·0 cites
- 3836US2016292934A1Programmable deviceCATERPILLAR INC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →