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Inventor

Edwin Ritzer

Inventor
Leverkusen, DE

Overview

10→
Patents
1989–2015
Patent span
Human necessities
Primary field (CPC A)

Patents· 10 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds38%
A23BPreservation of foods, foodstuffs or non-alcoholic beverages14%
A01NPreservation of bodies of humans or animals or plants or parts thereof10%
A61KPreparations for medical, dental or toiletry purposes10%
A61QSpecific use of cosmetics or similar toiletry preparations10%
B27KProcesses, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for10%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for5%
C07BGeneral methods of organic chemistry5%
PatentTitleYear
9,102,613'Method for producing sorbic anhydride and also use thereof as a preservative in foods'20158,440,719'Preservatives based on carboxylic anhydrides'20138,207,224'Preservatives based on carboxylic anhydrides'20126,350,893'Method for the production of dibenzyl carbonates'20026,160,160'Process for preparing benzyl carbazates'20005,756,824'Process for the preparation of carbazates'19985,081,288'Process for the preparation of substituted 3,5-dichloro-2,4-difluoro-benzenes'19925,068,428'Process for the preparation of cyclopropanecarboxamide'19915,032,687'Process for the preparation of cyclopropylamine'19914,868,347'Process for obtaining substituted fluorobenzenes'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2002Patents assigned to BAYER AG (6)· patent assignee history
1989–1992Based in Burscheid, DE· patent location history
1991Based in Gladbeck, DE· patent location history
1998–2015Based in Leverkusen, DE· patent location history
2012–2015Patents assigned to RITZER EDWIN (3)· patent assignee history
2012–2015Patents assigned to VOGL ERASMUS (3)· patent assignee history
2012–2013Patents assigned to HOFFMANN MANFRED (2)· patent assignee history
2012–2013Patents assigned to KAULEN JOHANNES (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG61989–2002
RITZER EDWINself32012–2015
VOGL ERASMUS32012–2015
HOFFMANN MANFRED22012–2013
KAULEN JOHANNES22012–2013
Locations
LocationPatentsSpan
Leverkusen, DE61998–2015
Burscheid, DE21989–1992
Gladbeck, DE21991