Inventor

Lamberto Crescentini

Inventor

Chester, VA, US

Overview

1977–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 18 as inventor

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

C07Dprimary

C07DHeterocyclic compounds18%

C01BNon-metallic elements15%

C07CAcyclic or carbocyclic compounds15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%

B01DSeparation6%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%

C08JWorking-up6%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%

C08LCompositions of macromolecular compounds6%

C01GCompounds containing metals not covered by subclasses c01d or c01f3%

PatentTitleYear

6,187,917'Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet'2001 5,990,306'Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet'1999 5,656,757'Monomer recovery from multi-component materials'1997 5,414,154'Phenol with low levels of methylbenzofuran'1995 5,240,568'Removal of acetophenone from phenol purification residues'1993 5,064,507'Distillation process for recovery of high purity phenol'1991 5,015,455'Disulfonate process control'1991 4,996,036'Abatement of NO.sub.x from hydroxylamine disulfonate process'1991 4,851,086'Production of high purity phenol by steam distillation'1989 4,767,503'Removal of light impurities from caprolactam by distillation with water'1988 4,722,769'Process for recovery of acetone'1988 4,692,321'Oxidation of ammonia over a mixed catalyst bed of cobalt and aluminum oxides'1987 4,582,642'Recovery of caprolactam from process residues'1986 4,389,339'Process for making a cobalt oxide catalyst'1983 4,311,642'Recovery of caprolactam from nylon 6 oligomers'1982 4,233,279'Process for the synthesis of ammonium nitrite'1980 4,108,922'Antistatic fiber containing multiple branched propoxylated-ethoxylated polyalkylenepolyamines and monoamines and their chain-extended reaction products'1978 4,051,196'Antistatic fiber containing chain-extended tetrols based on diamines'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1980Patents assigned to ALLIED CHEM (3)· patent assignee history

1977–2001Based in Chester, VA, US· patent location history

1982–1989Patents assigned to ALLIED CORP (7)· patent assignee history

1989Patents assigned to LUMMUS CO (1)· patent assignee history

1991–2001Patents assigned to ALLIED SIGNAL INC (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALLIED SIGNAL INC	8	1991–2001
ALLIED CORP	7	1982–1989
ALLIED CHEM	3	1977–1980
LUMMUS CO	1	1989

Locations

Location	Patents	Span
Chester, Virginia, US	18	1977–2001