Patents by Inventor Ian C. Callaghan
Ian C. Callaghan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 6420329Abstract: A range of novel biodegradable aqueous acid cleaning systems for removing limescale from surfaces, especially stainless steel and porcelain surfaces, wherein said system comprises a biodegradable aqueous acid system, said system having a pH of less than 7.0, said system comprising at least one of the following acids: i) iminodiacetic acid; ii) aspartic acid; iii) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of iminodiacetic acid; iv) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of aspartic acid; and v) C2-C10 polycarboxylic acids, said polycarboxylic acids containing a heteroatom in the main chain thereof, said heteroatom being selected from S, O and N; said system optionally comprising mixtures of said acids (i) to (v). The composition preferably comprises a surfactant to optimize the performance of said acid. Additional optional ingredients are selected from thickeners and co-builders and enzyme mixtures.Type: GrantFiled: July 3, 1997Date of Patent: July 16, 2002Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Grace Abamba, Robert Kinsley, Timothy I. Moodycliffe, Richard P. Woodbury
-
Patent number: 6310021Abstract: A range of novel biodegradable aqueous acid cleaning systems for removing limescale from surfaces, especially stainless steel and porcelain surfaces, wherein said system comprises a biodegradable aqueous acid system, said system having a pH of less than 7.0, said system comprising at least one of the following acids: i) iminodiacetic acid; ii) aspartic acid; iii) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of iminodiacetic acid; iv) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of aspartic acid; and v) C2-C10 polycarboxylic acids, said polycarboxylic acids containing a heteroatom in the main chain thereof, said heteroatom being selected from S, O and N; said system optionally comprising mixtures of said acids (i) to (v). The composition preferably comprises a surfactant to optimize the performance of said acid. Additional optional ingredients are selected from thickeners and co-builders and enzyme mixtures.Type: GrantFiled: October 29, 1998Date of Patent: October 30, 2001Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Grace Abamba, Robert Kinsley, Timothy I. Moodycliffe, Richard P. Woodbury
-
Patent number: 6291411Abstract: A single pack pourable liquid hypochlorite bleach cleaning composition for cleaning a flushable toilet bowl wherein at least 50% by weight of the hypochlorite comprises potassium hypochlorite and which liquid contains a bleach-resistant organic sequestering agent having a molecular weight below 1500 which sequesters calcium.Type: GrantFiled: September 22, 1999Date of Patent: September 18, 2001Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Timothy I. Moodycliffe, Richard W. Avery
-
Patent number: 6265367Abstract: A liquid cleaning composition is disclosed that is suitable for cleaning strippable surface. It has an ester solvent with a Hansen solubility parameter in the range of 9.5 to 11 which is present in amount of 3.0% to 7.2% by weight based on the total weight of the composition. There is also a surfactant system in an amount of 3.5% to 7.5% by weight of active material based on the total weight of the composition. The system has a natural soap and a nonionic surfactant; an abrasive in an amount of 0.5% to 4.0% by weight based on total weight of the composition; and at least 70% by weight of water based on total weight of the composition. Methods of using and preparing the composition are also described.Type: GrantFiled: May 13, 1999Date of Patent: July 24, 2001Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Balvinder Adat, Judith Ann Freeman
-
Patent number: 5958149Abstract: A liquid cleaning composition is disclosed that is suitable for cleaning strippable surface. It has an ester solvent with a Hansen solubility parameter in the range of 9.5 to 11 which is present in amount of 3.0% to 7.2% by weight based on the total weight of the composition. There is also a surfactant system in an amount of 3.5% to 7.5% by weight of active material based on the total weight of the composition. The system has a natural soap and a nonionic surfactant; an abrasive in an amount of 0.5% to 4.0% by weight based on total weight of the composition; and at least 70% by weight of water based on total weight of the composition. Methods of using and preparing the composition are also described.Type: GrantFiled: September 17, 1998Date of Patent: September 28, 1999Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Balvinder Adat, Judith A. Freeman
-
Patent number: 5877132Abstract: A range of novel biodegradable aqueous acid cleaning systems for removing limescale from surfaces, especially stainless steel and porcelain surfaces, wherein said system comprises a biodegradable aqueous acid system, said system having a pH of less than 7.0, said system comprising at least one of the following acids:i) iminodiacetic acid;ii) aspartic acid;iii) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of iminodiacetic acid;iv) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of aspartic acid; andv) C.sub.2 -C.sub.10 polycarboxylic acids,said polycarboxylic acids containing a heteroatom in the main chain thereof, said heteroatom being selected from S, O and N; said system optionally comprising mixtures of said acids (i) to (v).The composition preferably comprises a surfactant to optimize the performance of said acid. Additional optional ingredients are selected from thickeners and co-builders and enzyme mixtures.Type: GrantFiled: November 13, 1997Date of Patent: March 2, 1999Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Grace Abamba, Robert Kinsley, Timothy I. Moodycliffe, Richard P. Woodbury
-
Patent number: 5435927Abstract: A lubricating oil composition for use in an internal combustion engine comprising (1) a lubricating base oil, and (2) a monofunctional perfluoropolyether derivative of the general formula R.sub.F -Z where R.sub.F is a perfluoropolyether moiety with an average molecular weight in the range of from 135 to 20,000, and Z is a functional group.Type: GrantFiled: December 2, 1993Date of Patent: July 25, 1995Assignee: The British Petroleum Company p.l.c.Inventors: Paul Beckwith, Ian C. Callaghan, David Masheder
-
Patent number: 5242494Abstract: This invention relates to a foamable silicate composition comprising (a) one or more alkali metal silicates, (b) a blowing agent, (c) a hardener which can be an acetate or a formate ester of a di-polyhydric alcohol or a polyoxyalkylene glycol and (d) a surfactant having a hydrophilic-lypophilic balance of at least 8. The formulations are readily produced by mixing the components, are pourable, pumpable and sprayable, and give rise to foams of excellent compressive strength and thermal insulation properties under ambient conditions.Type: GrantFiled: August 5, 1991Date of Patent: September 7, 1993Assignee: British Technology Group Ltd.Inventors: Ian C. Callaghan, Elizabeth C. Cooper, Anne Lepre, Alistair S. Taylor
-
Patent number: 4874535Abstract: A scale inhibiting composition comprises the combination of (a) a copolymer of an alkene, preferably a branched chain alkene, and an unsaturated dicarboxylic acid or anhydride, in acidic or neutralized form, and (b) an organic polyphosphonic acid or salt.A preferred composition contains the sodium salt of a copolymer of isobutene and maleic anhydride and 1-hydroxyethyl-1,1-diphosphonic acid.The compositions may be used in secondary or tertiary oil recovery, desalination of sea water and the softening of boiler feed water.Type: GrantFiled: April 28, 1988Date of Patent: October 17, 1989Assignee: The Britisch Petroleum Company p.l.c.Inventors: Ian C. Callaghan, Ian Livsey
-
Patent number: 4711714Abstract: Water-insoluble polyoxyalkylene graft copolymers are effective anti-foam agents for reducing foaming in crude oil/gas separators. The copolymers are of formula: ##STR1## wherein R is an ethylene, propylene or butene group or a mixture thereof;R' is a hydrocarbyl group containing 1 to 8 carbon atoms;R" is a hydroxyl group, an alkoxy group or an alkyl group containing 1 to 8 carbon atoms;(a) is a number in the range 100 to 250;(b) is a number in the range 1 to 6;(c) is a number in the range 1 to 10; and(d) is a number in the range 10 to 100.They are particularly useful in breaking microgas dispersions and foams resulting from crude oils with a high gas to oil ratio.Type: GrantFiled: June 21, 1985Date of Patent: December 8, 1987Assignee: The British Petroleum Company p.l.c.Inventors: Ian C. Callaghan, Clive M. Gould, Wojciech Grabowski
-
Patent number: 4577491Abstract: A method for determining the stability of live foam comprises a sample pressurizing vessel connected to a sample injection chamber leading to a sample cell linked to a reference cell maintained at constant pressure. The link between the sample cell and the reference cell comprises a link fitted with a valve for initially equalizing the pressure between the two and subsequently isolating them. A differential pressure transducer is provided for determining the subsequent change in pressure of the sample with reference to the reference cell as the foam collapses.Type: GrantFiled: October 31, 1984Date of Patent: March 25, 1986Assignee: The British Petroleum Company, p.l.c.Inventors: Ian C. Callaghan, Clive M. Gould
-
Patent number: 4564665Abstract: Polysiloxanes of specified molecular weight and molecular weight distribution are effective anti-foam agents for reducing foaming in crude oil/gas separators. They are particularly useful in breaking microgas dispersions.The polysiloxanes, preferably polydimethyl siloxane, contain not more than 10% by weight of components of molecular weight 50,000 and lower, at least 15% by weight of components of molecular weight 200,000 and higher and not more than 6% by weight of components of molecular weight 370,000 and higher, molecular weights being expressed as polystyrene equivalent molecular weights.Type: GrantFiled: April 5, 1983Date of Patent: January 14, 1986Assignee: The British Petroleum Company p.l.c.Inventors: Ian C. Callaghan, Hans-Ferdi Fink, Clive M. Gould, Gotz Koerner, Hans-Jurgen Patzke, Christian Weitemeyer
-
Patent number: 4557737Abstract: Polysiloxanes of specified molecular weight and molecular weight distribution are effective anti-foam agents for reducing foaming in crude oil/gas separators. They are particularly useful in breaking microgas dispersions.The polysiloxanes, preferably polydimethyl siloxane, contain not more than 10% by weight of components of molecular weight 50,000 and lower, at least 15% by weight of components of molecular weight 200,000 and higher and not more than 6% by weight of components of molecular weight 370,000 and higher, molecular weights being expressed as polystyrene equivalent molecular weights.Type: GrantFiled: September 28, 1984Date of Patent: December 10, 1985Assignee: The British Petroleum Company p.l.cInventors: Ian C. Callaghan, Hans-Ferdi Fink, Clive M. Gould, Gotz Koerner, Hans-Jurgen Patzke, Christian Weitemeyer