Inventor
SPENCE MATTHEW A
US20 patents
⚠️ This page may combine multiple inventors who share the name “SPENCE MATTHEW A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CPS TECH HOLDINGS LLC
8 patentsUS10777858B2Sep 15, 2020
Methods for purifying and recycling lead from spent lead-acid batteries
CPS TECH HOLDINGS LLC2 citations83
US11411280B2Aug 9, 2022
Absorbent glass mat battery
CPS TECH HOLDINGS LLC5 citations79
US12278352B2Apr 15, 2025
Methods for purifying and recycling lead from spent lead-acid batteries
CPS TECH HOLDINGS LLC0 citations62
US11791505B2Oct 17, 2023
Methods for purifying and recycling lead from spent lead-acid batteries
CPS TECH HOLDINGS LLC0 citations62
US12542283B2Feb 3, 2026
Carbon fiber electrode with enhanced active material and lead acid battery having same
CPS TECH HOLDINGS LLC0 citations60
US12288897B2Apr 29, 2025
Absorbent glass mat battery
CPS TECH HOLDINGS LLC0 citations58
US11870096B2Jan 9, 2024
Absorbent glass mat battery
CPS TECH HOLDINGS LLC0 citations58
US11936032B2Mar 19, 2024
Absorbent glass mat battery
CPS TECH HOLDINGS LLC0 citations47
JOHNSON CONTROLS TECH CO
8 patentsUS9555386B2Jan 31, 2017
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO3 citations83
US9751067B2Sep 5, 2017
Methods for purifying and recycling lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO1 citations62
US10062933B2Aug 28, 2018
Hydrometallurgical electrowinning of lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations51
US9670565B2Jun 6, 2017
Systems and methods for the hydrometallurgical recovery of lead from spent lead-acid batteries and the preparation of lead oxide for use in new lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations51
US9660306B2May 23, 2017
Systems and methods for selectively separating and separately processing portions of lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations50
US9533273B2Jan 3, 2017
Systems and methods for isolating a particulate product when recycling lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations50
US10122052B2Nov 6, 2018
Systems and methods for purifying and recycling lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations49
US9757702B2Sep 12, 2017
Systems and methods for purifying and recycling lead from spent lead-acid batteries
JOHNSON CONTROLS TECH CO0 citations49
CLARIOS GERMANY GMBH & CO KG
2 patentsUS11923518B2Mar 5, 2024
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
CLARIOS GERMANY GMBH & CO KG0 citations59
US12266783B2Apr 1, 2025
Negative mass for lead-acid battery electrodes and lead-acid battery including same
CLARIOS GERMANY GMBH & CO KG0 citations54