Inventor
SPENGLER PHILIP CARL
US17 patents
⚠️ This page may combine multiple inventors who share the name “SPENGLER PHILIP CARL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CATERPILLAR INC
16 patentsUS7286928B2Oct 23, 2007
Wireless communications system for work machine components
CATERPILLAR INC13 citations82
US11052332B2Jul 6, 2021
Filtration media produced using additive manufacturing
CATERPILLAR INC7 citations81
US11673078B2Jun 13, 2023
Filter element locking mechanism
CATERPILLAR INC2 citations72
US11318399B2May 3, 2022
Locking feature for a filter
CATERPILLAR INC2 citations72
US11058977B2Jul 13, 2021
3D printed staged filtration media packs
CATERPILLAR INC4 citations71
US11969680B2Apr 30, 2024
Filtration media produced using additive manufacturing
CATERPILLAR INC2 citations70
US12458912B2Nov 4, 2025
Filter element locking mechanism
CATERPILLAR INC0 citations61
US12409399B2Sep 9, 2025
Filter element locking mechanism
CATERPILLAR INC0 citations61
US12121834B2Oct 22, 2024
Top and bottom loaded filter and locking mechanism
CATERPILLAR INC0 citations61
US12090426B2Sep 17, 2024
Locking feature for a filter
CATERPILLAR INC0 citations61
US11986756B2May 21, 2024
3D printed staged filtration media packs
CATERPILLAR INC0 citations61
US11707892B2Jul 25, 2023
Filtration media packs produced using additive manufacturing
CATERPILLAR INC0 citations61
US11318400B2May 3, 2022
Top and bottom loaded filter and locking mechanism
CATERPILLAR INC1 citations61
US10981335B2Apr 20, 2021
Filtration media packs produced using additive manufacturing
CATERPILLAR INC1 citations61
US12161957B2Dec 10, 2024
Integral filter endcap, mold, and seal
CATERPILLAR INC0 citations60
US11541334B2Jan 3, 2023
Integral filter endcap, mold, and seal
CATERPILLAR INC1 citations60