Inventor
Hermann Hoffmann
Inventor
Stuttgart, DE
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Lprimary
F01LCyclically operating valves for machines or engines27%
B01DSeparation6%
B23PMetal-working not otherwise provided for6%
F02DControlling combustion engines6%
Y02TClimate change mitigation technologies related to transportation6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
Y10TTechnical subjects covered by former us classification6%
B64DEquipment for fitting in or to aircraft3%
C07CAcyclic or carbocyclic compounds3%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
PatentTitleYear
10,371,020Internal combustion engine20199,815,556'Aircraft seat device'20178,857,177'Piston engine'20148,490,587'Cam drive'20138,327,815'Adjustable camshaft with a planetary gear'20127,845,075'Method for manufacturing a camshaft'20107,677,214'Device for deactivation of at least one cylinder of an internal combustion engine'20107,533,640'Combustion engine comprising a control cam'20097,431,002'Camshaft with contrarotating cams for automotive engines in particular'20087,311,072'Control unit for a valve, especially a gas exchange valve of an internal combustion engine'20075,225,103'Aqueous aldehyde solutions for trapping hydrogen sulfide in natural gas and crude oil producing plants'19935,152,916'Aqueous aldehyde solutions for trapping hydrogen sulfide in natural gas and crude oil producing plants'19925,126,418'Alkenylaminomethylenephosphonic acids and copolymers thereof with unsaturated carboxylic acids'19924,997,912'Esters of fatty acids, which may be quaternized, from oxalkylated alkylalkylenediamines'19914,722,812'Salts of alkenylsuccinic acid monoamides'19884,183,820'Use of demulsifying mixtures for breaking petroleum emulsions'19803,985,724'1-(4\'-Diazoniumphenyl)-pyridinium salts and the process of preparation'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Based in Charles City, IA, US· patent location history
1980–1993Based in Kelkheim, DE· patent location history
1988–1993Patents assigned to HOECHST AG (5)· patent assignee history
2007–2010Patents assigned to MAHLE VENTILTRIEB GMBH (3)· patent assignee history
2007–2014Based in Stuttgart, DE· patent location history
2008–2019Patents assigned to MAHLE INT GMBH (6)· patent assignee history
2012–2014Patents assigned to HOFFMANN HERMANN (3)· patent assignee history
2012–2013Patents assigned to HALE THOMAS (2)· patent assignee history
2017Based in Schwaebisch Hall, DE· patent location history
2019Based in Filderstadt, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAHLE INT GMBH | 6 | 2008–2019 |
| HOECHST AG | 5 | 1988–1993 |
| HOFFMANN HERMANNself | 3 | 2012–2014 |
| MAHLE VENTILTRIEB GMBH | 3 | 2007–2010 |
| HALE THOMAS | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Stuttgart, DE | 8 | 2007–2014 |
| Kelkheim, DE | 6 | 1980–1993 |
| Filderstadt, DE | 1 | 2019 |
| Schwaebisch Hall, DE | 1 | 2017 |
| Charles City, IA, US | 1 | 1976 |