Inventor
SPENGLER PHILIP C
US9 patents
Patents
9 patentsUS11612841B2Mar 28, 2023
Sensing system for detecting machine fluid degradation
CATERPILLAR INC2 citations70
US12521660B2Jan 13, 2026
Integrated manifold for pre-cleaner dust removal
CATERPILLAR INC0 citations59
US11110378B2Sep 7, 2021
Sensing system for detecting machine fluid degradation
CATERPILLAR INC0 citations59
US11173438B2Nov 16, 2021
Filter having tracer material
CATERPILLAR INC0 citations58
US11547964B2Jan 10, 2023
Actuated air filter dust valve
CATERPILLAR INC0 citations56
US10590846B2Mar 17, 2020
Valve cover extension tube with integrated sensor
CATERPILLAR INC1 citations54
US10315137B2Jun 11, 2019
Sensing system for detecting machine fluid degradation
CATERPILLAR INC0 citations49
US10598651B2Mar 24, 2020
Sensing system for detecting machine fluid degradation
CATERPILLAR INC0 citations38
US9295933B2Mar 29, 2016
Filter element and filter assembly having two filtration zones
CATERPILLAR INC0 citations38