Patents by Inventor Martin Rickwood
Martin Rickwood 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).
-
Publication number: 20100301022Abstract: Using a thermal transfer technique to transfer a laser-absorbing dye from a transfer medium to a receiving substrate, then activating the dye by exposure to a laser source to affect a weld between the receiving substrate and an adjacent second substrate at a desired joint region. The same laser may optionally be used to both transfer the laser-absorbing dye to a receiving substrate and weld the receiving substrate and the second substrate.Type: ApplicationFiled: June 1, 2009Publication date: December 2, 2010Applicant: GENTEX CORPORATIONInventors: Martin Rickwood, William H. Cawley
-
Patent number: 7732507Abstract: Spirotetrathiocarbamates (STOCs) or oxa substituted compounds (SOTOCs) of Formula I: Formula (I) or bisSTOC or bisSOTOC compounds of Formula II: Formula (II) wherein X1, X2, X3, X4, X5, X6, X7, and X8, are independently O or S; and preferably at least two and up to all four of X1, X2, X3 and X4, and at least two and up to all four of X5, X6, X7, and X8 are sulfur; Z is —CmR22m wherein m=1 to 4; —C(R2)2SC(R2)2—, C(R2)2SSC(R2)2—, or —C(R2)OC(R2)2; n is from 0 to 4; M is selected from CH2Cl, CH2SC(O)R1, CH2SC(S)R1, CH2S(CH2CH2S)qH wherein q is 0, 1 or 2; —CR2?CH2, —CH2OC(O)CR2?CH2, CH2N?C?S, CH2N?C?O, CH2NR2H, CH2OH, CH2SCH2CH2CR2?CH2, phenyl, C(R2)phenyl, furan, thiophene, halogen, C3-C6 cycloalkyl, C3-C6 heretocyclics, thiol, H, (III) or (IV) wherein A is S, O or phenyl; x is 0 or 1; R1 is C1-C22 alkyl; and R2 is H or C1-C22 alkyl have excellent optical properties. Methods for preparing these compositions and optical lenses prepared from the compounds are also provided.Type: GrantFiled: December 19, 2003Date of Patent: June 8, 2010Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Aref Jallouli, Martin Rickwood, Kimberly Morgan, Sirisoma Wanigatunga
-
Patent number: 7713452Abstract: Compounds that absorb ultraviolet light 380 nm to 400 nm range but avoid absorption in the blue light range, thereby imparting yellowness, i.e., 410-420 nm have suitable refractive characteristics useful in the preparation of optical resins or plastics suitable, for example, for the manufacture of ophthalmic lenses. Methods for making the compounds, optic lenses containing the compounds, and methods for making these are also described.Type: GrantFiled: December 30, 2005Date of Patent: May 11, 2010Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Joel Kauffman, Peter T. Litak, Martin Rickwood
-
Patent number: 7622526Abstract: The invention relates to a thermoset plastic material, comprising a three-dimensional matrix containing sulphur atoms and at least one anti-plasticizing additive which is unreactive toward said matrix.Type: GrantFiled: September 29, 2004Date of Patent: November 24, 2009Assignee: Essilor InternationalInventors: Nicolas Droger, Jean-Louis Halary, Gilles Richard, Martin Rickwood
-
Patent number: 7446228Abstract: Disclosed is a thiosphosphine compound of formula: wherein X represents with R1 being H or —CH3, R and R? represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n? is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5. The compounds can be used to make optically transparent articles such as ophthalmic lenses.Type: GrantFiled: October 20, 2006Date of Patent: November 4, 2008Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Yusef Turshani
-
Patent number: 7378556Abstract: Disclosed is a process for making a thiophosphine compound of formula (I): wherein X represents SH or with R1 being H or —CH3, R and R? represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n? is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5, wherein y =1, X is in para position with regard to phosphorus and represents SH.Type: GrantFiled: October 20, 2006Date of Patent: May 27, 2008Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Yusef Turshani
-
Publication number: 20080103230Abstract: Spirotetrathiocarbamates (STOCs) or oxa substituted compounds (SOTOCs) of Formula I: Formula (I) or bisSTOC or bisSOTOC compounds of Formula II: Formula (II) wherein X1, X2, X3, X4, X5, X6, X7, and X8, are independently O or S; and preferably at least two and up to all four of X1, X2, X3 and X4, and at least two and up to all four of X5, X6, X7, and X8 are sulfur; Z is —CmR22m wherein m=1 to 4; —C(R2)2SC(R2)2—, C(R2)2SSC(R2)2—, or —C(R2)OC(R2)2; n is from 0 to 4; M is selected from CH2Cl, CH2SC(O)R1, CH2SC(S)R1, CH2S(CH2CH2S)qH wherein q is 0, 1 or 2; —CR2?CH2, —CH2OC(O)CR2?CH2, CH2N?C?S, CH2N?C?O, CH2NR2H, CH2OH, CH2SCH2CH2CR2?CH2, phenyl, C(R2)phenyl, furan, thiophene, halogen, C3-C6 cycloalkyl, C3-C6 heretocyclics, thiol, H, (III) or (IV) wherein A is S, O or phenyl; x is 0 or 1; R1 is C1-C22 alkyl; and R2 is H or C1-C22 alkyl have excellent optical properties. Methods for preparing these compositions and optical lenses prepared from the compounds are also provided.Type: ApplicationFiled: December 19, 2003Publication date: May 1, 2008Applicant: Essilor International Compagnie Generale d'OptiqueInventors: Aref Jallouli, Martin Rickwood, Kimberly Morgan, Sirisoma Wanigatunga
-
Publication number: 20080064880Abstract: Compounds that absorb ultraviolet light 380 nm to 400 nm range but avoid absorption in the blue light range, thereby imparting yellowness, i.e., 410-420 nm have suitable refractive characteristics useful in the preparation of optical resins or plastics suitable, for example, for the manufacture of ophthalmic lenses. Methods for making the compounds, optic lenses containing the compounds, and methods for making these are also described.Type: ApplicationFiled: December 30, 2005Publication date: March 13, 2008Applicant: Essilor International Compagnie Generale d' OptiqueInventors: Joel M. Kauffman, Peter T. Litak, Martin Rickwood
-
Publication number: 20070232834Abstract: Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.Type: ApplicationFiled: October 20, 2006Publication date: October 4, 2007Applicant: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Turshani
-
Publication number: 20070232835Abstract: Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.Type: ApplicationFiled: October 20, 2006Publication date: October 4, 2007Applicant: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Turshani
-
Publication number: 20060270771Abstract: The invention relates to a thermoset plastic material, comprising a three-dimensional matrix containing sulphur atoms and at least one anti-plasticizing additive which is unreactive toward said matrix.Type: ApplicationFiled: September 29, 2004Publication date: November 30, 2006Inventors: Nicolas Droger, Jean-Louis Halary, Gilles Richard, Martin Rickwood
-
Patent number: 7129321Abstract: Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.Type: GrantFiled: March 24, 2004Date of Patent: October 31, 2006Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Yusef Turshani
-
Publication number: 20050107579Abstract: Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.Type: ApplicationFiled: March 24, 2004Publication date: May 19, 2005Applicant: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Turshani
-
Patent number: 5833885Abstract: A spiro (indolino) oxazine compound of general formula (I) ##STR1## wherein R.sub.1 represents a group of the formula --NR.sub.2 R.sub.3 wherein each of R.sub.2 and R.sub.3, which may be the same or different, independently represents an alkyl group, or a carbocyclic group, preferably aryl, or a heterocyclic group, or R.sub.2 and R.sub.3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more heteroatoms and which may optionally carry at least one substituent selected from alkyl, aryl or heteroaryl groups;--X-- is selected from --O--, --S--, --Se--, --NH-- or --NR-- wherein R represents an alkyl group, andring A is a carbocyclic or heterocyclic ring which can be optionally substituted with a group of formula R.sub.8 as defined above, or may optionally have a carbocyclic or heterocyclic ring fused thereto; and wherein R.sub.4 -R.sub.8 are as defined in the specification.Type: GrantFiled: December 23, 1996Date of Patent: November 10, 1998Assignee: Pilkington PLCInventors: Martin Rickwood, Sean Derek Marsden
-
Patent number: 5623005Abstract: A naphthopyran compound of general formula (I) ##STR1## wherein R.sub.1 represents a group of the formula --NR.sub.2 R.sub.3 wherein each of R.sub.2 and R.sub.3, which may be the same or different, independently represents an alkyl group, or a carbocyclic or heterocyclic group, or R.sub.2 and R.sub.3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more hetero atoms and which may optionally carry at least one substituent selected from alkyl, aryl, or heteroaryl groups; each of R.sub.4 and R.sub.5, which may be the same or different, independently represents an alkyl, alkenyl, carbocyclic or heterocyclic group, or R.sub.4 and R.sub.5 taken together with the carbon atom to which they are attached form a carboxylcyclic ring or a heterocyclic ring; and R.sub.6 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, a group of formula R.sub.Type: GrantFiled: November 2, 1995Date of Patent: April 22, 1997Assignee: Pilkington PLCInventors: Martin Rickwood, Katharine E. Smith, Christopher D. Gabbutt, John D. Hepworth
-
Patent number: 5520853Abstract: A naphthopyran compound of general formula (I) ##STR1## wherein R.sub.1 represents an alkyl group or an aryl group; each of R.sub.4 and R.sub.5, which may be the same or different, independently represents an alkyl, alkenyl, carbocyclic or heterocyclic group, or R.sub.4 and R.sub.5 taken together with the carbon atom to which they are attached form a carbocyclic ring or a heterocyclic ring; andR.sub.6 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, amino, substituted amino, azo, imino, amide, carboxylate, ester, cyano, trifluromethyl or nitro, and in addition R.sub.6 may represent a carbocyciic or heterocyclic ring fused to ring A.The naphthopyran compounds of the invention are useful as photochromic materials in lenses, e.g. sunglasses, and photochromic transparencies for cars and aircraft.Type: GrantFiled: August 2, 1994Date of Patent: May 28, 1996Assignee: Pilkington PLCInventors: Martin Rickwood, Sean D. Marsden, John D. Hepworth, Christopher D. Gabbutt
-
Patent number: 5446149Abstract: Photochromic compounds having the following structure II ##STR1## in which R.sup.1 is a group selected from hydrogen, alkyl, alkoxy, amino, aryl or heteroaryl;each R.sup.2 is a group selected from C1 to C10 branched or linear alkyls, carbocylic or heterocyclic, the R.sup.2 groups can be independent or together from part of a carboxylic or heterocyclic ring;R.sup.3 is a group selected from hydrogen, alkyl, alkoxy, alkenyl, alkynyl, imino, azo, amino, carboxy ester, amide, cyano, halogen, trifluoromethyl, nitro, aryl or heteroaryl, R.sup.3 is a fused carbocyclic or heterocyclic moiety;Y is a six membered carbocyclic or heterocyclic ring.X links N as shown to the ring Y to form a fused heterocyclic ring.Type: GrantFiled: December 2, 1993Date of Patent: August 29, 1995Assignee: Pilkington plcInventors: Martin Rickwood, Sean D. Marsden
-
Patent number: 5446151Abstract: A photo reactive material, such as a photochromic material, which has the following structure: ##STR1## where the variables, A, R, R', R", R*, R.sup.+, m, and n are defined in claim 1.Type: GrantFiled: December 2, 1993Date of Patent: August 29, 1995Assignee: Pilkington plcInventors: Martin Rickwood, John D. Hepworth, Christopher D. Gabbutt, Sean D. Marsden
-
Patent number: 5446150Abstract: Photochromic materials which have a structure which includes a spiro-pyrrolidinebenzoxazine structure comprising a pyrrolidine part and a benzoxazine part and the benzoxazine part includes at least one mesomeric electron donating group chosen from amino and alkoxy moieties, the one or more mesomeric electron donating groups being linked to the 6' position via attachment to a conjugated system in which the unsaturated bonds forming the linkage are chosen from --C.dbd.C--, --C.tbd.C--, --C.dbd.N-- and --N.dbd.N--.Type: GrantFiled: December 2, 1993Date of Patent: August 29, 1995Assignee: Pilkington plcInventors: Martin Rickwood, Sean D. Marsden, Victoria E. Askew
-
Patent number: 4913544Abstract: A plastic organic photochromic article, typically a lens such as an ophthalmic lens or a window such as a vehicle roof light, comprisig a plastics host material having a photochromic compound incorporated therein or applied thereto, the article exhibiting the following properties, measured at Air Mass 2 at 25.degree. C.:(a) an integrated visible transmission in the faded state (B.IVT) ranging from 90 to 25%,(b) an integrated visible transmission in the darkened state (D.IVT) ranging from 1 to 50%, preferably 4 to 30%,(c) the rate of darkening of the article when it is exposed to actinic radiation is such that 88% of the darkening range is achieved in 30 seconds or less, i.e. T.sub.88 .ltoreq.30 secs,(d) the rate of fading of the article from its fully darkened condition is such that more than 60% of the optical density range is recovered in 60 seconds, i.e. % ODG-1.gtoreq.60%, and(e) the induced optical density of the article, i.e.Type: GrantFiled: May 1, 1987Date of Patent: April 3, 1990Assignee: Pilkington plcInventors: Martin Rickwood, John D. Hepworth