Inventor

Carl-Wolfgang Schellhammer

Inventor

Bergisch Gladbach, DE

Overview

15→

Patents

1977–1985

Patent span

Chemistry

Primary field (CPC C)

Patents· 15 as inventor

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

C07Dprimary

C07DHeterocyclic compounds46%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients19%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments8%

C07CAcyclic or carbocyclic compounds4%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%

C09KMaterials for miscellaneous applications, not provided for elsewhere4%

D06LDry-cleaning, washing or bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods4%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation4%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%

PatentTitleYear

4,526,705'Light-collecting systems and the use of coumarin derivatives as energy converters in them'1985 4,447,651'1,4-Bis-(4-chloro-2-methoxystyryl)-benzene'1984 4,326,066'Triazolyl coumarin compounds, processes for their preparation and their use as whiteners and laser dyestuffs'1982 4,284,787'Process for the preparation of 1,2,3-triazoles substituted in the 2-position'1981 4,274,062'Dyestuff laser'1981 4,271,293'Benzofuranyl-benzimidazoles'1981 4,263,435'6 -[2-Hydroxy-4-(1,2,3-triazol-2-yl)-phenyl]-2,4-dioxo-1,3,5-trimethyl-hexa hydro-s-triazines and their preparation'1981 4,252,720'Pyrazoline compounds'1981 4,229,579'3-(Halopyrazolyl)-7-triazolyl-coumarin compounds'1980 4,183,853'1-[p-(2-Trialkylammonium)propylsulfonylphenyl]-3-(phenyl)-pyrazoline salts'1980 4,144,243'3-Pyrozolyl-4-triazolyl compounds'1979 4,080,379'Sulphonamidosalicylaldehydes'1978 4,071,466'Optical brighteners'1978 4,069,228'Coumarins containing sulphonylamino groups'1978 4,005,098'Triazolyl-coumarins'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1985Patents assigned to BAYER AG (15)· patent assignee history

1977–1980Based in Opladen, DT· patent location history

1978Based in Schildgen, DT· patent location history

1980–1985Based in Bergisch Gladbach, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	15	1977–1985

Locations

Location	Patents	Span
Bergisch Gladbach, DE	9	1980–1985
Opladen, DT	3	1977–1980
Schildgen, DT	3	1978