Inventor

Yoshimasa Machida

Inventor

Ibaraki, JP

Overview

1981–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 42 as inventor

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

C07Dprimary

C07DHeterocyclic compounds53%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations19%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium12%

C07CAcyclic or carbocyclic compounds7%

Y02PClimate change mitigation technologies in the production or processing of goods7%

A61KPreparations for medical, dental or toiletry purposes3%

PatentTitleYear

6,281,214'Biphenyl derivatives'2001 5,849,912'Biphenyl derivatives'1998 5,741,902'7-acyl-3-(substituted carbamoyloxy) cephem compounds and process for their preparation'1998 5,604,217'7-acyl-3-(substituted carbamoyloxy) cephem compounds and process for their preparation'1997 5,587,473'7-acyl-3-(substituted carbamoyloxy) cephem compounds and process for their preparation'1996 5,563,265'7-acyl-3-(substituted carbamoyloxy) cephem compounds'1996 5,559,225'7-acyl-3-(substituted carbamoyloxy) cephem compound'1996 5,527,948'Naphthalene derivative'1996 5,482,937'1,4-diazepine derivative and its pharmaceutical use'1996 5,476,864'Glycerin derivative and its pharmacological use'1995 5,476,863'Glycerin derivative and its pharmacological use'1995 5,468,740'1,4-diazepine derivative and its pharmaceutical use'1995 5,438,045'1,4-diazepine derivative and its pharmaceutical use'1995 5,409,909'1,4-diazepine derivative and its pharmaceutical use'1995 5,382,579'Triazolo-1,4-diazepine derivatives and their use in pharmaceuticals'1995 5,373,000'7Beta-(thiadiazolyl)-2-iminoacetamido-3cephem compounds'1994 5,304,553'1,4-diazepine derivative and its pharmaceutical use'1994 5,298,649'Naphthalene derivative'1994 5,273,985'Glycerin derivative and its pharmacological use'1993 5,221,671'Triazolo-1,4-diazepine derivatives and their use in pharmaceuticals'1993 5,134,111'Naphthalene derivative'1992 5,089,491'3-propenylcephem derivative'1992 5,037,827'Glycerin derivative and its pharmacological use'1991 5,010,188'Cephem derivatives'1991 5,008,260'Cephem derivatives'1991 5,006,649'3-propenylcephem derivative'1991 4,929,612'Thiadiazolylacetamide cephem derivatives'1990 4,921,850'3-propenylcephem derivative'1990 4,748,171'Cephem compounds having at the 3-position a (1,4-methylene-1-piperidinio)methyl group or a (1-quinuclidinio)methyl group'1988 4,698,336'3-(pyrrolidinio)methyl-3-cephem derivatives'1987 4,546,176'7-Carboxymethoxyphenylacetamido-3-cephem derivatives and antibacterial preparations containing the same'1985 4,513,145'2-Methylchromone derivatives and process for their preparation'1985 4,468,394'Cephalosporin compounds'1984 4,448,775'3-Carbamoyloxymethylcephem derivatives, and antibacterial drugs containing same'1984 4,415,567'7.alpha.-Methoxycephalosporin derivatives, and antibacterial drugs containing the same'1983 4,352,801'Cephem derivatives and antibacterial agents comprising said compounds'1982 4,344,944'7-.alpha.-methoxycephalosporin derivatives, and antibacterial drugs onctaining the same'1982 4,331,606'N-(Substituted chromone-3-carbonyl)-phenylglycine derivatives'1982 4,309,354'Chromone derivatives'1982 4,285,940'Cephalosporin derivatives, and antibacterial drugs comprising said derivatives'1981 4,285,939'Cephalosporin derivatives, and antibacterial drugs containing the derivatives'1981 4,285,941'Cephalosporin compounds and antibacterial drugs containing the same'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2001Patents assigned to EISAI CO LTD (41)· patent assignee history

1981–1983Based in Wako, JP· patent location history

1984–1998Based in Ibaraki, JP· patent location history

1992–1996Based in Tsukuba, JP· patent location history

1996Patents assigned to EISAI CORP LTD (1)· patent assignee history

1998–2001Based in London, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
EISAI CO LTD	41	1981–2001
EISAI CORP LTD	1	1996

Locations

Location	Patents	Span
Ibaraki, JP	29	1984–1998
Wako, JP	8	1981–1983
Tsukuba, JP	3	1992–1996
London, GB	2	1998–2001