Inventor

Naoki Nakatsugawa

Inventor

Hyogo, JP

Overview

10→

Patents

1991–2008

Patent span

Chemistry

Primary field (CPC C)

Patents· 10 as inventor

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

C02Fprimary

C02FTreatment of water, waste water, sewage, or sludge17%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%

A23BPreservation of foods, foodstuffs or non-alcoholic beverages6%

A61LMethods or apparatus for sterilising materials or objects in general6%

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

C12NMicroorganisms or enzymes6%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture6%

C12RIndexing scheme associated with subclasses c12c - c12q, relating to microorganisms6%

F24FAir-conditioning6%

PatentTitleYear

7,320,759'Sludge treatment method'2008 7,288,191'Sludge treatment apparatus'2007 6,884,355'Process for treating organic wastewater and apparatus for treating the organic wastewater'2005 5,591,349'Microorganism removing method'1997 5,527,459'Microbe propagation preventing apparatus'1996 5,484,570'Microbe propagation prenvention method'1996 5,445,798'Microbe propagation preventing apparatus and microbe propagation preventing method'1995 5,350,684'Extremely halophilic methanogenic archaebacteria'1994 5,143,835'Alkalophilic methanogen and fast methane fermentation method'1992 5,055,406'Extremely halophilic methanogenic archaebacteria'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1994Patents assigned to JAPAN RES DEV CORP (3)· patent assignee history

1991–1992Patents assigned to HORIKOSHI KOKI (2)· patent assignee history

1991–1992Patents assigned to NAKATSUGAWA NAOKI (2)· patent assignee history

1991–1992Based in Saitama-shi, JP· patent location history

1994–2008Patents assigned to MITSUBISHI ELECTRIC CORP (8)· patent assignee history

1994Patents assigned to RIKAGAKU KENKYSUHO (1)· patent assignee history

1994Based in Wako, JP· patent location history

1995–1997Based in Hyogo, JP· patent location history

2005–2008Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI ELECTRIC CORP	8	1994–2008
JAPAN RES DEV CORP	3	1991–1994
HORIKOSHI KOKI	2	1991–1992
NAKATSUGAWA NAOKIself	2	1991–1992
RIKAGAKU KENKYSUHO	1	1994

Locations

Location	Patents	Span
Hyogo, JP	4	1995–1997
Tokyo, JP	3	2005–2008
Saitama-shi, JP	2	1991–1992
Wako, JP	1	1994