Inventor

Henry Ledon

Inventor

Versailles, FR

Overview

1990–2012

Patent span

Chemistry

Primary field (CPC C)

Patents· 26 as inventor

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

C01Bprimary

C01BNon-metallic elements25%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry14%

C07DHeterocyclic compounds7%

A61KPreparations for medical, dental or toiletry purposes5%

B01DSeparation5%

C07CAcyclic or carbocyclic compounds5%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium5%

C11DDetergent compositions5%

D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials5%

A01NPreservation of bodies of humans or animals or plants or parts thereof3%

PatentTitleYear

8,247,392'Materials for selective trapping of carbon monoxide'2012 7,659,393'Method of preparing cis-8b-methyldecahydro-2a,4a,6a,8a-tetraazacyclopenta[fg]acenaphthylene, cis-decahydro-2a,4a,6a,8a-tetraazacyclopenta[fg]acenaphthylene, cyclene and functionalised cyclenes'2010 7,517,512'Mesoporous organic-inorganic hybrid materials for separating gases'2009 7,452,845'Mesoporous organic-inorganic hybrid materials for separating gases'2008 7,393,380'Method of guaranteeing at least one characteristic of a fluid used for producing food products'2008 7,312,327'Method of preparing nitrogen macrocycles'2007 7,276,104'Installation for producing products using a fluid'2007 6,274,114'Process for on-site production of ultra-high-purity hydrogen peroxide for the electronics industry'2001 6,214,225'Process for the preparation of an ultra pure hydrogen peroxide solution by the ion exchange by sequence: anionic-cationic-anionic-cationic'2001 6,187,189'Process for the preparation of an ultrapure solution of hydrogen peroxide by ion exchange with recycling'2001 6,183,638'Plant for the preparation of an ultra pure hydrogen peroxide solution by ionic exchange in beds having defined H/D ratios'2001 6,113,798'Process for the purification of hydrogen peroxide'2000 6,001,324'Process for the preparation of an ultra pure hydrogen peroxide solution by ion exchange in the presence of acetate ions'1999 5,961,947'Process for the preparation of an ultra pure hydrogen peroxide solution by the ion exchange by sequence: anionic-cationic-anionic-cationic'1999 5,932,187'Process for the preparation of an ultra pure hydrogen peroxide solution by ionic exchange in beds having defined H/D ratios'1999 5,928,621'Process for the preparation of an ultra pure solution of hydrogen peroxide by ion exchange with recycling'1999 5,916,532'Plant for producing hydrogen peroxide'1999 5,902,559'Plant for the production of hydrogen peroxide'1999 5,851,402'Process for the purification of hydrogen peroxide'1998 5,827,493'Process for producing hydrogen peroxide'1998 5,616,335'Stable thickened disinfecting aqueous composition containing an organic peroxy acid intended for human or animal use'1997 5,594,150'Process for the preparation of a secondary or tertiary hydroxylated amine compound from a primary or secondary amine compound and a product made by the process'1997 5,589,590'Process for the preparation of cyclodextrins or other compounds capable of producing clathrates with a gas'1996 5,382,571'Clathrates of peroxyacids, their preparation and their uses'1995 4,978,802'Process for production of aromatic aldehydes'1990 4,943,422'Process for treatment of gaseous effluents containing sulfur dioxide with oxygen'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2008Patents assigned to AIR LIQUIDE (13)· patent assignee history

1990–2012Based in Versailles, FR· patent location history

1990Based in Lyons, FR· patent location history

1995–1999Patents assigned to CHEMOXAL SA (7)· patent assignee history

2007–2012Patents assigned to CENTRE NAT RECH SCIENT (5)· patent assignee history

2012Patents assigned to BARBE JEAN-MICHEL (1)· patent assignee history

2012Patents assigned to BRANDES STEPHANE (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AIR LIQUIDE	13	1990–2008
CHEMOXAL SA	7	1995–1999
CENTRE NAT RECH SCIENT	5	2007–2012
BARBE JEAN-MICHEL	1	2012
BRANDES STEPHANE	1	2012

Locations

Location	Patents	Span
Versailles, FR	25	1990–2012
Lyons, FR	1	1990