Inventor

Claude Dezael

Inventor

Maisons Laffitte, FR

Overview

28→

Patents

1976–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 28 as inventor

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

B01Dprimary

B01DSeparation37%

C01BNon-metallic elements34%

C01CAmmonia5%

C10GCracking hydrocarbon oils5%

Y02PClimate change mitigation technologies in the production or processing of goods5%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%

C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium2%

C01GCompounds containing metals not covered by subclasses c01d or c01f2%

C10LFuels not otherwise provided for2%

G01NInvestigating or analysing materials by determining their chemical or physical properties2%

PatentTitleYear

6,627,108'Desulphurizing catalytic composition and its use in removing hydrogen sulphide and sulphur dioxide from a gas'2003 6,413,488'Post conversion of a gas containing hydrogen sulphide, the elimination of sulphur crystallized by cooling'2002 6,309,609'Apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a step for depleting the recycled solvent in sulphur'2001 6,210,454'Apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide'2001 6,165,436'High-pressure sulfur recovery process'2000 6,114,178'Device for removing and/or injecting a fluid sample enabling the chemical and/or thermodynamic equilibrium to be preserved'2000 5,951,961'Process for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a step for eliminating sulphur by cooling a gaseous effluent'1999 5,935,547'Process for treating gas containing hydrogen sulfide and sulphur dioxide, comprising a step for depleting the recycled solvent in sulphur'1999 5,670,123'Process for the extraction of hydrogen sulphide from a gas mixture'1997 5,458,675'Process for the treatment of ventilation air containing styrene'1995 5,059,569'Process and catalyst for selective reduction of nitrogen oxides'1991 4,725,417'Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with hydrogen sulfide'1988 4,609,456'Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons'1986 4,421,725'Process for purifying a gas containing hydrogen sulfide and carbon dioxide and apparatus therefor'1983 4,310,497'Process for purifying a hydrogen sulfide containing gas'1982 4,220,634'Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia'1980 4,174,383'Process for purifying a sulfur dioxide containing gas with production of elemental sulfur'1979 4,164,543'Process for regenerating brines containing sodium sulfites and sulfates'1979 4,163,043'Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution'1979 4,146,579'Process for converting sulfitic solutions by means of ammonium bisulfate with SO.sub.2 production'1979 4,048,293'Process for purifying a sulfur dioxide containing gas'1977 4,044,114'Process for purifying a gas containing sulfur compounds'1977 4,029,745'Process for reducing molten ammonium sulfates containing metallic impurities to ammonia and sulfur dioxide'1977 3,974,258'Process for purifying a sulfur dioxide containing gas'1976 3,974,257'Process for removing sulfur dioxide contained in a gas'1976 3,966,891'Process for manufacturing sulfur from a solution of sodium sulfite'1976 3,962,410'Process for purifying industrial gases containing hydrogen sulfide with sulfur production'1976 3,943,228'Process for efficiently purifying industrial gas'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2003Patents assigned to INST FRANCAIS DU PETROLE (28)· patent assignee history

1976–2003Based in Maisons Laffitte, FR· patent location history

1976–2000Based in Maisons-Lafitte, FR· patent location history

1976Based in Maisons, FR· patent location history

2000Patents assigned to LE GAZ INTEGRAL (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
INST FRANCAIS DU PETROLE	28	1976–2003
LE GAZ INTEGRAL	1	2000

Locations

Location	Patents	Span
Maisons Laffitte, FR	24	1976–2003
Maisons-Lafitte, FR	3	1976–2000
Maisons, FR	1	1976