Mineral oils: processes and products – Products and compositions – Lubricating oils
Reexamination Certificate
2004-12-02
2009-08-11
Caldarola, Glenn A (Department: 1797)
Mineral oils: processes and products
Products and compositions
Lubricating oils
C208S019000, C508S466000, C508S468000, C508S469000, C508S471000, C508S475000, C508S479000, C508S485000, C508S491000
Reexamination Certificate
active
07572361
ABSTRACT:
Lubricant blends and finished gear oils comprising a lubricant base oil fraction derived from highly paraffinic wax, a petroleum derived base oil, and a pour point depressant are provided. The lubricant base oil fraction derived from highly paraffinic wax comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at −40° C.
REFERENCES:
patent: 3773650 (1973-11-01), Hislop et al.
patent: 3775288 (1973-11-01), Eagen et al.
patent: 3852207 (1974-12-01), Strangeland et al.
patent: 3904513 (1975-09-01), Fischer et al.
patent: 4157294 (1979-06-01), Iwao et al.
patent: 4347121 (1982-08-01), Mayer et al.
patent: 4440871 (1984-04-01), Lok et al.
patent: 4477333 (1984-10-01), Hafez
patent: 4568663 (1986-02-01), Mauldin
patent: 4673487 (1987-06-01), Milller
patent: 4810357 (1989-03-01), Chester et al.
patent: 4943424 (1990-07-01), Miller
patent: 5135638 (1992-08-01), Miller
patent: 5158665 (1992-10-01), Miller
patent: 5208403 (1993-05-01), Buchanan et al.
patent: 5282958 (1994-02-01), Santilli et al.
patent: 6080301 (2000-06-01), Berlowitz et al.
patent: 6096940 (2000-08-01), Wittenbrink et al.
patent: 6190532 (2001-02-01), Degnan et al.
patent: 6420618 (2002-07-01), Berlowitz et al.
patent: 6475960 (2002-11-01), Berlowitz et al.
patent: 6506297 (2003-01-01), Wittenbrink et al.
patent: 2005/0133407 (2005-06-01), Abernathy et al.
patent: 0609079 (1994-08-01), None
patent: 99/41332 (1999-08-01), None
patent: WO 2064710 (2002-08-01), None
patent: 02/070636 (2002-09-01), None
patent: 2004/053030 (2004-06-01), None
Gatto, V.J., et al., “The Influence of Chemical Structure on the Physical Properties and antioxidant Response of Cracked Base Stocks and Polyalphaolefins”,J. Synthetic Lubrication19(1): 3-18 (2002).
Barrer, R.M., “Zeolites, Science and Technology”, edited by F.R. Rodrigues, et al., NATO ASI Series, Martinus Nijhoff Publishers, Boston, pp. 74-76 (1984).
Baerlocher, Ch., et al., “Atlas of Zeolite Framework Types”, Fifth Edition, Elsevier, New York, pp. 10-15 (2001).
Anderson et al., “Reactions on ZSM-5-Type Zeolite Catalysts”,Journal of Catalysts58: 114-130 (1979).
Gruse, William A. and Donald R. Stevens,Chemical Technology of Petroleum, 3rdEdition, McGraw-Hill Book Co., New York, pp. 566-571 (1960).
Kramer, D.C., et al., “Influence of Group II & III Base Oil Composition on VI and Oxidation Stability”, 1999 AlChE Spring National Meeting in Houston, (May 1999).
U.S. Appl. No. 10/847,997 “Lubricant Blends with Low Brookfield Viscosities”, Inventors Rosenbaum, Miller and Pudlak, filed May 19, 2004.
U.S. Appl. No. 10/847,996 “Process for Making Lubricant Blends with Low Brookfield Viscosities”, Inventors Rosenbaum, Miller and Pudlak, filed May 91, 2004.
U.S. Appl. No. 11/000,892, “Process for Making Lubricant Blends with Low Brookfield Viscosities”, Inventors Rosenbaum, Miller and Pudlak, filed Dec. 2, 2004.
U.S. Appl. No. 10/301,391 “Blending of Low Viscosity Fischer-Tropsch Bse Oils with Conventional Base Oils to Produce High Quality Lubricating Base Oils”, Inventors Lok, Kramer, Rosenbaum, and Pudlak, filed Nov. 20, 2002.
U.S. Appl. No. 10/744,389, “Composition of Lubricating Base Oil with High Monocycloparaffins and Low Multicycloparaffins”, Inventors Abernathy, Kramer, Rosenbaum, Miller and Krug, filed Dec. 23, 2004.
U.S. Appl. No. 10/744,870, “Process for Manufacturing Lubricating Base Oil with High Monocycloparaffins and Low Multicycloparaffins”, Inventors Abernathy, Kramer, Rosenbaum, Miller and Krug, filed Dec. 23, 2003.
U.S. Appl. No. 10/743,932, “Finished Lubricants Comprising Lubricating Base Oil with High Monocycloparaffins and low Multicycloparaffins”, Inventors Abernathy, Kramer, Rosenbaum, Miller and Krug, filed Dec. 23, 2003.
U.S. Appl. No. 10/704,031, “Process for Improving the Lubricating Properties of Base Oils Using a Fischer-Tropsch Derived Bottoms”, Inventor Miller, filed Nov. 7, 2003.
U.S. Appl. No. 10/835,219, “Method of Operating a Wormgear Drive at High Energy Efficiency”, Inventors Ziemer, Abernathy, Rosenbaum, Miller and Okazaki, filed Apr. 29, 2004.
International Search Report from PCT/US05/17976; mailed Feb. 15, 2006.
Miller Stephen J.
Pudlak Joseph M.
Rosenbaum John M.
Caldarola Glenn A
Chevron U.S.A. Inc.
Crowell & Moring LLP
Oladapo Taiwo
LandOfFree
Lubricant blends with low brookfield viscosities does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lubricant blends with low brookfield viscosities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricant blends with low brookfield viscosities will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4133874