PENNZOIL PRODUCTS COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 5133
 
  
 
C10M LUBRICATING COMPOSITIONS 544
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2118
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
C08K USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS 1101
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6074994 Non-aqueous solvent-free lamellar liquid crystalline lubricantsFeb 04, 97Jun 13, 00[C10M]
5728907 Tetraalkylmethanes as synthetic lubricantsOct 27, 95Mar 17, 98[C07C]
5705604 Tire sealer and inflator compositionsJun 28, 96Jan 06, 98[C08G]
5672727 Dithiocarbamoyl diols and borate esters thereof for use in lubricant compositionsJun 20, 96Sep 30, 97[C07C]
5618912 Tire sealer and inflator compositionsMay 04, 95Apr 08, 97[C08G]
5560853 Dithiocarbamoyl diols and borate esters thereof for use in lubricant compositionsMar 13, 92Oct 01, 96[C10M]
5500456 Tire sealer and inflatorJan 26, 94Mar 19, 96[B29C, C08L, C08K]
5436379 Base oil for shear stable multi-viscosity lubricants and lubricants therefromJan 14, 94Jul 25, 95[C10M]
5320761 Lubricant fluid composition and methods for reducing frictional losses therewith in internal combustion enginesJul 27, 92Jun 14, 94[C10M]
5319144 Process for productin of 4,4'-thiobis phenolsJul 28, 93Jun 07, 94[C07C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6130190 Liquid crystal and surfactant containing lubricant compositionsExpiredNov 06, 97Oct 10, 00[C10M]
5518590 Electrochemical sensors for motor oils and other lubricantsExpiredJun 21, 94May 21, 96[G01N]
5378249 Biodegradable lubricantExpiredJun 28, 93Jan 03, 95[C10M, C10L]
D352904 BottleExpiredJul 15, 93Nov 29, 94[]
5188724 Olefin polymer pour point depressantsExpiredFeb 06, 91Feb 23, 93[C10G]
5045119 Telephone cable cleaning and restoration fluidExpiredSep 11, 90Sep 03, 91[B08B, C09D]
5015507 Method of converting rusted surface to a durable oneExpiredJan 31, 89May 14, 91[B32B]
5012022 Lubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufactureExpiredMar 15, 89Apr 30, 91[C07C]
5012023 Lubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufactureExpiredMar 15, 89Apr 30, 91[C07C]
4999122 Non-aqueous lamellar liquid crystalline lubricantsExpiredDec 30, 88Mar 12, 91[C10M]
4970242 Anhydrous, nonflammable tire sealer and inflatorExpiredAug 18, 89Nov 13, 90[C08J]
4959995 Automated cold crank simulatorExpiredJan 17, 89Oct 02, 90[G01N]
4957704 Method of corrosion inhibition using hydrocarbyl polycarboxylates compositionsExpiredAug 09, 88Sep 18, 90[C07D, C23F]
4956111 Methacrylate pour point depressants and compositionsExpiredJan 25, 89Sep 11, 90[G10M]
4945017 Rust conversion compositionExpiredMar 03, 89Jul 31, 90[C08K]
4929782 Lubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufactureExpiredMar 15, 89May 29, 90[C07C]
4897210 Lithium complex grease thickener and high dropping point thickened greaseExpiredJul 12, 88Jan 30, 90[C10M]
4891073 Method of treating surface with water-in-oil emulsion compositionExpiredApr 13, 89Jan 02, 90[B08B]
4873370 Alkylene diamines for use in friction and wear reducing compositionsExpiredMar 03, 87Oct 10, 89[C10M, C07C]
4867911 Surface treating water-in-oil emulsion composition and methodExpiredJan 19, 88Sep 19, 89[C11D]

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