Inventor

Hermann Stein

Inventor

Bad Durkheim, DE

Overview

24→

Patents

1979–2004

Patent span

Performing operations

Primary field (CPC B)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Dprimary

B01DSeparation14%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry11%

A61KPreparations for medical, dental or toiletry purposes9%

C07CAcyclic or carbocyclic compounds9%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general7%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace7%

B01FMixing, e.g. dissolving, emulsifying or dispersing5%

B60CVehicle tyres5%

Y10TTechnical subjects covered by former us classification5%

A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for4%

PatentTitleYear

6,722,780'Preparation of liquid dispersions'2004 6,536,940'Preparation of liquid dispersions'2003 6,530,684'Preparation of liquid dispersions'2003 6,406,735'Process for preparing a finely divided pulverous carotenoid retinoid or natural colourant preparation'2002 5,441,407'Roller for roller-hearth furnaces'1995 5,364,563'Powdered aqueous carotenoid dispersions'1994 5,317,258'Device for evaluating periodic signals from inductive pick-ups having a pulse former stage influenced as a function of the pick-up signal amplitude'1994 5,143,684'Insulated roller assembly for a roller furnace'1992 4,828,806'Process for cleaning an exhaust gas'1989 4,806,427'Process for the production of catalysts for the reduction of nitrogen oxides from exhaust gases and similar chemical air cleaning processes'1989 4,758,410'Cartridge for catalyst plates'1988 4,721,699'Catalyst for the separation of nitrogen oxides from combustion exhaust gases'1988 4,720,376'Process for the removal of nitrogen oxides and soot from exhaust gases of machines and combustion installations burning heavy fuel oil'1988 4,695,559'Catalyst for the selective reduction of nitrogen oxides in waste gases and process for the manufacture of such a catalyst'1987 4,677,731'Process and device for mounting porous ceramic material'1987 4,672,052'Catalyst for removal of nitrogen oxides from exhaust gases'1987 4,656,148'Method for the reactivation of a catalyst used for removal of nitrogen oxides'1987 4,592,403'Emergency operation ring for tubeless tires in motor vehicles'1986 4,564,485'Process for producing a plastic composition which can be processed into a fire-resistant material'1986 4,436,680'Process for producing granular, fire-resistant material'1984 4,371,024'Emergency running ring for pneumatic vehicle tires'1983 4,295,509'Emergency track ring for pneumatic vehicle tires'1981 4,196,416'Synchronization apparatus with variable window width and spacing at the receiver'1980 4,137,522'Remote control apparatus for a plurality of controllable objects'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1980Patents assigned to STEUERUNGSTECHN GMBH GES FUER (2)· patent assignee history

1979–1980Based in Munich, DE· patent location history

1981–1986Patents assigned to VORWERK & SOHN (3)· patent assignee history

1981–1986Based in Wuppertal, DE· patent location history

1984–1992Patents assigned to DIDIER WERKE AG (12)· patent assignee history

1984–1995Based in Bad Durkheim, DE· patent location history

1987–1989Patents assigned to DIDIER ENG (5)· patent assignee history

1987–1989Based in Taunusstein, DE· patent location history

1994–2004Based in Liestal, CH· patent location history

2002–2004Patents assigned to ROCHE VITAMINS INC (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DIDIER WERKE AG	12	1984–1992
DIDIER ENG	5	1987–1989
ROCHE VITAMINS INC	4	2002–2004
VORWERK & SOHN	3	1981–1986
STEUERUNGSTECHN GMBH GES FUER	2	1979–1980

Locations

Location	Patents	Span
Bad Durkheim, DE	9	1984–1995
Liestal, CH	5	1994–2004
Taunusstein, DE	4	1987–1989
Wuppertal, DE	2	1981–1986
Munich, DE	2	1979–1980