Inventor
Go Fujisawa
Inventor
Sagamihara, JP
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling42%
G01NInvestigating or analysing materials by determining their chemical or physical properties40%
G01VGeophysics7%
Y02ATechnologies for adaptation to climate change4%
B08BCleaning in general2%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%
G02BOptical elements, systems or apparatus2%
PatentTitleYear
10,921,482Mid-infrared carbon dioxide sensor202110,865,638Mid-infrared sensor202010,539,500Active surface cleaning for a sensor202010,487,646Mid-infrared sensor201910,345,480Mid-infrared acid sensor20198,909,478'Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same'20148,904,859'Detecting gas compounds for downhole fluid analysis'20148,813,554'Methods and apparatus to estimate fluid component volumes'20148,555,696'Methods of calibrating a fluid analyzer for use in a wellbore'20138,393,207'Methods and apparatus to use multiple sensors to measure downhole fluid properties'20138,322,196'Vibrating wire viscometers'20128,307,698'Vibrating wire viscometers'20128,032,303'Methods and apparatus to determine a concentration of nitrogen in a downhole fluid'20117,849,736'Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same'20107,500,388'Method and apparatus for in-situ side-wall core sample analysis'20097,458,258'Methods and apparatus for oil composition determination'20087,336,356'Method and apparatus for downhole spectral analysis of fluids'20087,305,306'System and methods of deriving fluid properties of downhole fluids and uncertainty thereof'20077,095,012'Methods and apparatus for determining chemical composition of reservoir fluids'20067,081,615'Methods and apparatus for the downhole characterization of formation fluids'20067,075,063'Determining phase transition pressure of downhole retrograde condensate'20067,028,773'Assessing downhole WBM-contaminated connate water'20067,002,142'Determining dew precipitation and onset pressure in oilfield retrograde condensate'20066,956,204'Determining fluid properties from fluid analyzer'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2021Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (23)· patent assignee history
2005–2006Based in Danbury, CT, US· patent location history
2007–2021Based in Sagamihara, JP· patent location history
2008–2013Based in Kanagawa, JP· patent location history
2009Based in Sagamihira, JP· patent location history
2012–2014Patents assigned to FUJISAWA GO (7)· patent assignee history
2012–2014Patents assigned to GODEFROY SOPHIE NAZIK (4)· patent assignee history
2012–2014Patents assigned to MATSUMOTO NORIYUKI (2)· patent assignee history
2013–2014Patents assigned to MULLINS OLIVER C (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHLUMBERGER TECHNOLOGY CORP | 23 | 2005–2021 |
| FUJISAWA GOself | 7 | 2012–2014 |
| GODEFROY SOPHIE NAZIK | 4 | 2012–2014 |
| MULLINS OLIVER C | 3 | 2013–2014 |
| MATSUMOTO NORIYUKI | 2 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sagamihara, JP | 14 | 2007–2021 |
| Danbury, CT, US | 6 | 2005–2006 |
| Kanagawa, JP | 3 | 2008–2013 |
| Sagamihira, JP | 1 | 2009 |