Inventor

Ludwig Friedrich

Inventor

Bruehl, DE

Overview

14→

Patents

1977–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 14 as inventor

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

A61Pprimary

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations41%

C07DHeterocyclic compounds38%

A61NElectrotherapy3%

C07CAcyclic or carbocyclic compounds3%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%

C07HSugars3%

G21GConversion of chemical elements3%

H01JElectric discharge tubes or discharge lamps3%

H05HPlasma technique3%

PatentTitleYear

6,495,842'Implantation of the radioactive 32P atoms'2002 RE033476'6-(alkanolaminoaryl)-3(2H)-pyridazinone derivatives, and their use'1990 4,873,246'6-(acylaminoaryl)-3(2H)-pyridazinone derivatives, and their use'1989 4,636,504'6-(acylaminoaryl)-3(2H)-pyridazinone derivatives and their use'1987 4,517,196'Tricyclic thiazolyloxamic acids and their derivatives, their preparation, and therapeutic agents containing these compounds'1985 4,514,413'Gastric acid secretion inhibiting N-(imidazol-1-ylalkyl)thiourea derivatives'1985 4,477,451'5,6-Dihydro-11-methylenemorphanthridin-6-ones, their preparation and drugs containing these compounds'1984 4,463,007'Triazoloquinazolinones, and compositions and methods for treating allergic disorders with them'1984 4,438,131'.OMEGA.-Cyano-1, .OMEGA.-diphenyl-azaalkane derivatives, their preparation and drugs containing them'1984 4,407,810'Thiazol-2-yl-oxamic acid derivatives, and therapeutic agents containing these compounds'1983 4,399,139'5,6-Dihydro-11-alkylene-morphanthridin-6-ones, their pharmaceutical compositions and method of use'1983 4,183,935'Bispidine derivatives, their preparation, and drugs containing same'1980 4,151,277'Non-glycosidic theophylline-sugar derivatives'1979 4,013,663'Isoquinoline compounds'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to KNOLL AG (1)· patent assignee history

1977–1990Based in Bruehl, DE· patent location history

1979–1989Patents assigned to BASF AG (11)· patent assignee history

1980Based in Mannheim, DE· patent location history

2002Patents assigned to KARLSRUHE FORSCHZENT (1)· patent assignee history

2002Based in Karlsruhe, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	11	1979–1989
KARLSRUHE FORSCHZENT	1	2002
KNOLL AG	1	1977

Locations

Location	Patents	Span
Bruehl, DE	12	1977–1990
Karlsruhe, DE	1	2002
Mannheim, DE	1	1980