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Inventor

Manilal S. Dahanayake

Inventor
Princeton Junction, NJ, US

Overview

53→
Patents
1991–2017
Patent span
Chemistry
Primary field (CPC C)

Patents· 53 as inventor

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

C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere25%
C11DDetergent compositions12%
B01DSeparation9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
A61KPreparations for medical, dental or toiletry purposes5%
A61QSpecific use of cosmetics or similar toiletry preparations5%
C02FTreatment of water, waste water, sewage, or sludge5%
A01NPreservation of bodies of humans or animals or plants or parts thereof4%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables4%
E21BEarth or rock drilling3%
PatentTitleYear
9,732,268'Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid'20179,062,238'Methods and compositions for viscosifying heavy aqueous brines'20159,035,104'Process for making polyglycerol ethers of fatty alcohols'20158,985,206'Enhanced foam stability applications and methods'20158,851,187'Method for mobility control in oil-bearing carbonate formations'20148,524,642'Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid'20138,222,194'Cleaning compositions incorporating green solvents and methods for use'20128,133,924'Demulsifiers and methods for use in pharmaceutical applications'20128,124,570'Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid'20128,022,016'Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid'20117,789,143'Methods for recovering oil from an oil reservoir'20107,789,144'Methods for recovering oil from an oil reservoir'20107,786,179'Demulsifiers in solvent base for separating emulsions and methods of use'20107,784,540'Method for recovering oil from an oil reservoir'20107,779,913'Methods for recovering oil from an oil reservoir'20107,772,164'Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid'20107,770,642'Methods for recovering oil from an oil reservoir'20107,671,099'Method for spearation crude oil emulsions'20107,629,296'Composition and method for thickening heavy aqueous brines with cationic guar'20097,461,694'Methods for recovering oil from an oil reservoir'20087,404,442'Method of recycling fracturing fluids using a self-degrading foaming composition'20087,378,378'Rheology enhancers'20087,279,446'Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance'20076,831,108'Viscoelastic surfactant fluids and related methods of use'20046,476,168'Emulsions having activating agents of alkoxylates of 6, 6-dimethylbicyclo 3.1.1 hept-2-ene-2-ethanol'20026,358,914'Surfactant compositions with enhanced soil release properties containing a cationic gemini surfactant'20026,277,801'Low foaming surfactant compositions useful in highly alkaline caustic cleaners'20016,242,404'Enhanced soil release polymer compositions'20016,235,149'Acrylic acid/maleic acid copolymers as detackification agents for adhesives contained in secondary fiber'20016,207,058'Recovery and reuse of nonionic surfactants from aqueous solutions'20016,204,297'Nonionic gemini surfactants'20016,121,222'Anionic surfactants having multiple hydrophobic and hydrophilic groups'20006,013,185'Recovery and reuse of nonionic surfactants from aqueous solutions'20006,004,466'Recovery and reuse of sugar-derived nonionic surfactants from aqueous solutions'19995,945,393'Nonionic gemini surfactants'19995,925,714'Surfactant for self-inverting polyacrylmides'19995,919,980'Recovery and reuse of amphoteric surfactants from aqueous solutions'19995,914,310'Amphoteric surfactants having multiple hydrophobic and hydrophilic groups'19995,843,317'Recovery and reuse of anionic surfactants from aqueous solutions'19985,811,384'Nonionic gemini surfactants'19985,783,554'Cleaning compositions containing anionic surfactants having multiple hydrophobic and hydrophilic groups'19985,686,024'Aqueous dispersion of a surface active polymer having enhanced performance properties'19975,656,586'Amphoteric surfactants having multiple hydrophobic and hydrophilic groups'19975,654,480'Recovery and reuse of surfactants from aqueous solutions'19975,643,864'Anionic surfactants having multiple hydrophobic and hydrophilic groups'19975,643,498'Quaternary cationic surfactants having multiple hydrophobic and hydrophilic groups'19975,407,536'Amphoteric surfactants as glass fiber dispersants for the manufacture of uniform glass fiber mats'19955,250,499'Delivery system for agricultural chemicals'19935,176,736'Delivery system for agricultural chemicals'19935,160,528'Delivery system for agricultural chemicals'19925,156,666'Delivery system for agricultural chemicals'19925,071,463'Delivery system for agricultural chemicals'19915,045,232'Low viscosity defoaming/antiforming formulations'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1993Patents assigned to ISP INVESTMENTS INC (5)· patent assignee history
1991–1993Based in Wayne, NJ, US· patent location history
1995–1997Patents assigned to RHONE POULENC INC (4)· patent assignee history
1995–2017Based in Princeton Junction, NJ, US· patent location history
1997Based in Princeton, NJ, US· patent location history
1998–2014Patents assigned to RHODIA (29)· patent assignee history
2012–2017Patents assigned to RHODIA OPERATIONS (7)· patent assignee history
2012–2015Patents assigned to DAHANAYAKE MANILAL S (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RHODIA291998–2014
RHODIA OPERATIONS72012–2017
DAHANAYAKE MANILAL Sself52012–2015
ISP INVESTMENTS INC51991–1993
RHONE POULENC INC41995–1997
Locations
LocationPatentsSpan
Princeton Junction, New Jersey, US461995–2017
Wayne, New Jersey, US61991–1993
Princeton, New Jersey, US11997