Inventor

Ralf Wichmann

Inventor

Bergisch Gladbach, DE

Overview

11→

Patents

1991–2007

Patent span

Physics

Primary field (CPC G)

Patents· 11 as inventor

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

G03Cprimary

G03CPhotosensitive materials for photographic purposes64%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers14%

G03DApparatus for processing exposed photographic materials14%

C07CAcyclic or carbocyclic compounds7%

PatentTitleYear

7,160,674'Photographic chemicals bundle'2007 7,028,719'Process for processing chemicals'2006 6,951,276'Pack for processing chemicals'2005 6,824,965'Bleach bath'2004 6,350,563'Photographic black-and-white reversal first developer'2002 5,716,767'Bleaching bath for photographic black-&-white material'1998 5,565,138'Bleach'1996 5,354,649'Color photographic silver halide material'1994 5,238,791'Bleaching bath'1993 5,149,618'Bleach fixing process'1992 5,009,985'Iron complexes and bleaching baths containing same'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1998Patents assigned to AGFA GEVAERT AG (5)· patent assignee history

1991–1992Based in Cologne, DE· patent location history

1993Based in Koeln, DE· patent location history

1994–2007Based in Bergisch Gladbach, DE· patent location history

1996Patents assigned to AGFA AG (1)· patent assignee history

2002–2004Patents assigned to AGFA GEVAERT (2)· patent assignee history

2005–2006Patents assigned to AGFAPHOTO GMBH (2)· patent assignee history

2007Patents assigned to A & O IMAGINING SOLUTIONS GMBH (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AGFA GEVAERT AG	5	1991–1998
AGFA GEVAERT	2	2002–2004
AGFAPHOTO GMBH	2	2005–2006
A & O IMAGINING SOLUTIONS GMBH	1	2007
AGFA AG	1	1996

Locations

Location	Patents	Span
Bergisch Gladbach, DE	8	1994–2007
Cologne, DE	2	1991–1992
Koeln, DE	1	1993