Inventor · disambiguated record
Darrell V. Nieschwitz
Also filed as: NIESCHWITZ DARRELL V
22 granted patents·7 pending applications·86 citations·filing 2003–2025
93Inventor score
Top patents by PatentIndex Score
29 records- 0184US7945990B2Vacuum hose storage systemH P PRODUCTS INC·Filed 2008·Granted May 24, 2011·15 cites·23 claims
- 0282US11096534B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2019·Granted Aug 24, 2021·1 cites·16 claims
- 0381US10405713B1Central vacuum cleaning systemCOLTRIN CENTRAL VACUUM SYSTEMS INC·Filed 2017·Granted Sep 10, 2019·6 cites·16 claims
- 0481US7080425B2Vacuum canister and mounting bracket for use therewithH P PRODUCTS INC·Filed 2003·Granted Jul 25, 2006·30 cites·30 claims
- 0578US2025194876A1Vacuum inlet valve assembly with sliding pinsH P PRODUCTS INC·Filed 2025·Application pending·0 cites
- 0677US12256886B2Vacuum inlet valve assembly with sliding pinsH P PRODUCTS INC·Filed 2023·Granted Mar 25, 2025·0 cites·9 claims
- 0777US12178382B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2023·Granted Dec 31, 2024·0 cites·20 claims
- 0877US2025089955A1Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2024·Application pending·0 cites
- 0976US2024292987A1Adapter for a vacuum hoseH P PRODUCTS INC·Filed 2024·Application pending·0 cites
- 1073US9782047B2Vacuum tube locking collarH-P PRODUCTS INC·Filed 2014·Granted Oct 10, 2017·5 cites·21 claims
- 1171US11019967B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2019·Granted Jun 1, 2021·1 cites·16 claims
- 1270US10820763B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2018·Granted Nov 3, 2020·1 cites·18 claims
- 1369US11896187B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2021·Granted Feb 13, 2024·0 cites·20 claims
- 1469US11707174B2Vacuum inlet valve assembly with sliding pinsH P PRODUCTS INC·Filed 2021·Granted Jul 25, 2023·0 cites·3 claims
- 1569US10973382B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2018·Granted Apr 13, 2021·1 cites·13 claims
- 1669US10433690B2Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2017·Granted Oct 8, 2019·1 cites·12 claims
- 1767US7434657B2Acoustic foam sound reducer for vacuum power unitH P PRODUCTS INC·Filed 2005·Granted Oct 14, 2008·3 cites·12 claims
- 1866US7051398B2Vacuum canister with auxiliary intake valveH P PRODUCTS INC·Filed 2003·Granted May 30, 2006·14 cites·21 claims
- 1963US12016517B2Adapter for a vacuum hoseH P PRODUCTS INC·Filed 2021·Granted Jun 25, 2024·0 cites·22 claims
- 2063US2021196091A1Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2021·Application pending·0 cites
- 2158US11484165B2Vacuum inlet valve assemblyH P PRODUCTS INC·Filed 2019·Granted Nov 1, 2022·0 cites·20 claims
- 2256US2022361725A1Vacuum inlet valve assembly with a closeable sealH P PRODUCTS INC·Filed 2022·Application pending·0 cites
- 2355US11903553B2Vacuum hose having an integrated switchH P PRODUCTS INC·Filed 2021·Granted Feb 20, 2024·0 cites·13 claims
- 2455US11534044B2Vacuum inlet valve assembly with a closeable sealH P PRODUCTS INC·Filed 2020·Granted Dec 27, 2022·0 cites·19 claims
- 2555US2009188073A1Vacuum hose storage systemH P PRODUCTS INC·Filed 2008·Application pending·0 cites
- 2653US11311158B1Central vacuum cleaning systemCOLTRIN CENTRAL VACUUM SYSTEMS INC·Filed 2019·Granted Apr 26, 2022·0 cites·21 claims
- 2747USD885000SHose valve assembly for vacuum cleaning deviceH P PRODUCTS INC·Filed 2018·Granted May 19, 2020·4 cites·1 claims
- 2847US2020178745A1Central vacuum system and inlet valves thereforH P PRODUCTS INC·Filed 2020·Application pending·0 cites
- 2939USD494331SAcoustic foam sound reducer for vacuum power unitH P PRODUCTS INC·Filed 2003·Granted Aug 10, 2004·4 cites·1 claims
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