...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7375252 | Compounds and method for the inhibition of the expression of VCAM-1 This invention is in the area of methods and compositions for the inhibition of the expression of VCAM-1 and, in particular, for the treatment of diseases mediated by VCAM-1, including cardiovascular and inflammatory diseases. ... | 05/20/2008 |
| 7211700 | Non-halogenated phenyl substituted phenols, antimicrobial compositions containing the same, and methods of using the same A antimicrobial compound, compositions containing the same, and method of using the same for reducing the presence of microorganism on a substrate or in a fluid environment comprising an antimicrobial effective carrier and at least one antimicrobial compounds includ... | 05/01/2007 |
| 6936739 | Fluorine-containing bisphenols, their preparation, their precursors and intermediates, and use of the fluorine-containing bisphenols This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I) wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR2, C1-C | 08/30/2005 |
| 6689922 | Vitamin D analogues The invention concerns novel bi-aromatic compounds having the formula: ##STR1## which are analogs of vitamin D, the process of preparing them, as well as their use in pharmaceutical compositions in human or veterinary medicine, particularly in dermatology... | 02/10/2004 |
| 6608061 | Bisaryl compound and medicament for cancer treatment comprising the same A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof: Ar1 --S--R1 --S--Ar2 wherein R1 represents a nonmetal bridging... | 08/19/2003 |
| 6506943 | Process for producing aldehydes A process for producing an aldehyde of the invention allows a 1,2-diol (vic-diol) to react with oxygen in the presence of a ruthenium catalyst supported on a carrier to oxidatively cleave a bond between two carbon atoms, where hydroxyl groups are combined... | 01/14/2003 |
| 6379590 | Method for making unsymmetrically substituted fluorenyl compounds for nonlinear optical applications A new method for producing unsymmetrically substituted fluorenyl compounds, one step of which is the preparation of 2,7-disubstituted fluoren-9-one derivatives via the nucleophilic substitution of a compound of the formula D ##STR1## wherein A' is se... | 04/30/2002 |
| 6218431 | Substituted biphenyls Substituted biphenyls having glucagon receptor antagonistic activity. Claimed compounds have the formula ##STR1## wherein R1a and R1b independently represent (C1 -C6) alkyl; R2 represents (C1 | 04/17/2001 |
| 5705533 | 10-thio-substituted 1,8-dihydroxy-9 (10H) -anthracenone pharmaceuticals 10-thio-substituted 1,8-dihydroxy-9(10H) anthracenones, therapeutic compositions containing at least one of the 10-thio-substituted 1,8-dihydroxy-9(10H) anthracenones of the invention and methods of treating inflammatory conditions are provided.... | 01/06/1998 |
| 5668168 | 1,2-dithiin antiinfective agents This invention pertains to a novel group of 1,2-dithiin compounds useful as antiinfective agents, and a novel synthetic process to produce the same. The compounds are particularly effective in treating fungal infections, especially those caused by Candida... | 09/16/1997 |
| 5488180 | Complex hydrophobe compounds This invention relates to complex hydrophobe compounds and to alkoxylation products, i.e., condensation reaction products of alkylene oxides and complex hydrophobe compounds having at least one active hydrogen. This invention also relates to alkoxylation ... | 01/30/1996 |
| 5464866 | Substituted hydrindanes for the treatment of angiogenesis-dependent diseases Substituted hydrindanes and their use in controlling angiogenesis-dependent diseases in warm blooded animals are disclosed.... | 11/07/1995 |
| 5401883 | Process for preparing 2,6-di-tertiarybutyl-4-mercaptophenol and 4,4'-isopropylidenedithio-bis-(2,6-di-tertiarybutylphenol) This invention relates to an improvement in a process for making 2,6-di-tertiarybutyl-4-mercaptophenol and 4,4-isopropylidenedithio-bis-(2,6-di-tertiarybutylphenol) which comprises reduction of bis (3,5-di-tertiarybutyl-4-hydroxyphenyl)polysulfide with ... | 03/28/1995 |
| 5391650 | Bisbenzocyclobutene thermosetting compounds and process for preparing the same A compound having at least one 2-hydroxy-1,3-propylidene, 2-acetoxy-1,3-propylidene, or 2-alkoxy-1,3-propylidene moiety between two benzocyclobutene end moieties is prepared by (a) contacting a diepoxide species with a benzocyclobutene species containing ... | 02/21/1995 |
| 5288742 | , dialkylbenzyl derivatives The invention concerns ,-dialkylbenzyl derivatives of the formula I ##STR1## wherein Ar1 is phenyl or naphthyl, or a 10-membered bicyclic heterocyclic moiety containing one or two nitrogen heteroatoms and optionally cont... | 02/22/1994 |
| 5214069 | Alcohol and ether derivatives The invention concerns a compound of the formula I, ##STR1## wherein Ar1 is optionally substituted phenyl or naphthyl; A1 is (1-6C)alkylene, (3-6C)alkenylene, (3-6C)alkynylene or cyclo(3-6C)alkylene; Ar2 is optionally subs... | 05/25/1993 |
| 5126486 | Phenolic compounds A phenolic compound having formula (I): ##STR1## wherein X represents a chlorine atom or a methyl group, and a recording material comprising a coloress or light-colored leuco dye and the above phenolic compound serving as a color developer for the le... | 06/30/1992 |
| 5087743 | Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R1 -R6 have the meanings specified in the description, and the preparation thereof are described. The substances are suitable for controlling diseases and as cosme... | 02/11/1992 |
| 5059723 | Hydroxyalkylation of phenols or thiophenols with cyclic organic carbonates using triorganophosphine catalysts This invention relates to the use of triorganophosphine compounds as catalyst for the reaction of phenols or thiophenols with cyclic organic carbonates.... | 10/22/1991 |
| 5053548 | Biphenyl derivative composition for nerve cell degeneration repairing or protective agent and process for preparing a phenyl derivative contained in the composition There is disclosed a biphenyl derivative of the formula (B): ##STR1## wherein R1, R3, R4, R5 and Rc are as defined or its salt, a composition for nerve cell degeneration repairing or protecting a... | 10/01/1991 |
| 5008430 | Mercaptopyrenes, preparation thereof and use thereof for the preparation of charge transfer complexes The invention relates to mercaptopyrenes of the formula ##STR1## in which n denotes a whole number from 3 to 10 and R stands for a substitute or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl or aryl radical to a process for its preparation, i... | 04/16/1991 |
| 5008459 | Substituted phenols as stabilizers Novel compositions are described which comprise an elastomer or a lubricant and at least one compound of the formulae I or II ##STR1## The symbols R1, R2, R3, Z1 and Z2 are as defined in claim 1.... | 04/16/1991 |
| 4894109 | Method and apparatus for tacking together the copies of multicopy forms A method and apparatus for tacking together multipage forms having pin holes with the use of adhesive tacking tape.... | 01/16/1990 |
| 4845119 | Alkene, alkyne or cycloalkylene derivatives A compound of the formula ##STR1## wherein X has the formula --CR5 .dbd.CR6 --, --C.tbd.C-- or ##STR2## wherein ring A is phenyl, naphthyl or heterocyclic; wherein R1 is hydrogen, alkyl, alkanoyl or aroyl; wherei... | 07/04/1989 |
| 4820756 | Thioether substituted phenols and their use as stabilizers Novel compounds of the formula I ##STR1## in which R1, R2, R8, R9 and R10 are independently alkyl, alkenyl, cycloalkyl, phenyl, naphthyl, alkylphenyl or aralkyl and R1 and R2 | 04/11/1989 |
| 4792633 | Preparation of ortho-(alkyl- or arylthio)phenols Strong acids, e.g., aluminosilicates and sulfonic acids are employed as catalysts for the (alkyl or aryl)thiolation of phenols using dialkyl or diaryl disulfides and/or (alkyl- or arylthio)phenols as thiolating agents, and for the isomerization of (alkyl-... | 12/20/1988 |
| 4772405 | Lubricant compositions which contain sulfur-containing phenol derivatives, and novel sulfur-containing phenol derivatives The invention relates to compositions comprising a lubricant or a hydraulic fluid and at least one compound of formula I ##STR1## wherein X is --S--, --O--, --CO--O--, --CH2 -- or --NR5 --, where R5 is hydrogen or C | 09/20/1988 |
| 4734527 | Process for preparing 2,6-di-tertiarybutyl-4-mercaptophenol In a process for making 2,6-di-tertiarybutyl-4-mercaptophenol by the Zn/acid reduction of bis (3,5-di-tertiarybutyl-4-hydroxyphenyl)polysulfide the addition of catalytic amounts of lead to the zinc reagent results in substantial improvement in the process... | 03/29/1988 |
| 4732912 | Phenol derivatives A phenol derivative of the formula wherein NU is a defined bis-phenolic nucleus including a hydroxyphenyl-hydroxynaphthyl; hydroxyphenyl-hydroxyindanyl, hydroxyphenyl-hydroxybenzothienyl or di-hydroxyphenyl-ethylene or vinylene nucleus; wherein A is alkyl... | 03/22/1988 |
| 4686235 | Substituted cinnamyl-2,3-dihydrobenzofuran and analogs useful as anti-inflammatory agents Substituted cinnamyl-2,3-dihydrobenzofurans and analogs were prepared from the nucleophlic substitution of a cinnamylhalide with a 2,3-dihydrobenzofuran anion or an analog thereof. These compounds were found to be potent topical anti-inflammatory agents.... | 08/11/1987 |
| 4678665 | Polyanionic compounds derived from aromatic ethers of polyglycerols Products of formula (I) ##STR1## in which R=C6-18 aromatic or alkylaromatic of valency z, R'=H, C1-16 alkyl or phenyl, A=CH2 or CH2 --O-- and, in the latter case, R'.noteq.H, x=1-8, y=1-20, z=1-3 and T deno... | 07/07/1987 |
| 4670495 | O-linked polyphenolic antioxidants Novel o-bridged polynuclear polyphenols of the formula I ##STR1## which contain at least one organic radical, such as alkyl, cycloalkyl or aryl, per phenyl nucleus and are formed by condensation of the monomeric phenolic components with customary bri... | 06/02/1987 |
| 4659762 | Tris (substituted hydroxyphenylthio) trithioorthoester stabilizers for polymers The title compounds correspond to the formula ##STR1## and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.... | 04/21/1987 |
| 4631143 | Triphenylene derivatives Triphenylene derivatives of the formula I ##STR1## wherein X1 to X6 are each, independently of one another, --SH, --SR, --SOR, --SO2 R or --S--COR, and each R is an alkyl group with up to 20 C atoms, it being possible... | 12/23/1986 |
| 4611023 | Di-(substituted hydroxyphenylthio) alkane and cycloalkane stabilizers and stabilized compositions Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein R is tert-butyl, R1 is hydrogen or alkyl of 1 to 4 carbon atoms... | 09/09/1986 |
| 4599451 | Process for preparing ortho-(alkylthio)phenols The process of the invention involves reacting a phenol with a dialkyl disulfide in the presence of a zirconium phenoxide catalyst to prepare the corresponding ortho-(alkylthio)phenol.... | 07/08/1986 |
| 4596828 | [(2-hydroxy-5-alkoxyphenyl)methylthio]phenylmethanol and derivatives thereof useful as anti-inflammatory agents [(2-Hydroxy-5-alkoxyphenyl)methylthio]phenylmethanol and derivatives thereof were prepared from an appropriate 2-hydroxy-5-alkoxybenzaldehyde with a hydroxymethylthiophenol. These compounds were found to be potent anti-inflammatory agents.... | 06/24/1986 |
| 4560799 | Tri- and Tetra-(substituted hydroxyphenylthio) alkane and cycloalkane stabilizers and stabilized compositions Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein T1 T2 independently are alkyl, cycloalkyl, phenyl, a... | 12/24/1985 |
| 4547593 | Preparation of (hydrocarbylthio)phenols (Hydrocarbylthio)phenols, such as 2-(alkylthio)phenols, are prepared by heating one or more (hydrocarbylthio)phenols selected from 2-, 3-, 4-, and poly(hydrocarbylthio)phenols in the presence of a catalytic amount of an aluminum phenoxide to redistribute ... | 10/15/1985 |
| 4533753 | (Hydrocarbylthio)phenols and their preparation (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups on a phenolic ring are prepared by reacting phenolic compounds with an excess of hydrocarbyl disulfide in the presence of catalytic amounts of an aluminum phenoxide. Novel and useful ... | 08/06/1985 |