Coating processes – With pretreatment of the base – Metal base
Reexamination Certificate
2006-12-05
2006-12-05
Lavilla, Michael E. (Department: 1775)
Coating processes
With pretreatment of the base
Metal base
C427S384000, C427S430100, C427S435000, C427S436000
Reexamination Certificate
active
07144599
ABSTRACT:
The ferrous metal chemical conversion coating is comprised of mixed oxides and organometallic compounds of aluminum and iron. A ferrous metal substrate is immersed for a period of time in a bath composition, at a temperature, at a pH, and at a concentration for each constituent of the bath composition, that will form a coating with the desired characteristics. The bath composition comprises water, aluminum salt, oxalic acid, and an oxidizer. The conversion coating is amorphous in nature and can be formed as thin as 1 micron with a coating weight in the range of about 40–250 milligrams per square foot. When sealed with an appropriate rust preventive material, the coating enhances corrosion resistance of the ferrous metal substrate. It is an effective absorbent base for paint finishes. When top coated with a lubricant, the conversion coating aids (a) assembly of parts, (b) break-in of sliding surfaces, and (c) anti-galling.
REFERENCES:
patent: 2148331 (1939-02-01), Weisberg et al.
patent: 2774696 (1956-12-01), Gibson
patent: 2791525 (1957-05-01), Rausch et al.
patent: 2805969 (1957-09-01), Goodspeed et al.
patent: 2817610 (1957-12-01), Newell et al.
patent: 2835616 (1958-05-01), Rausch et al.
patent: 2850417 (1958-09-01), Jenkins et al.
patent: 2960420 (1960-11-01), Mitchell
patent: 3053691 (1962-09-01), Hartman et al.
patent: 3053692 (1962-09-01), Pocock
patent: 3083149 (1963-03-01), Cranston
patent: 3121033 (1964-02-01), Stapleton
patent: 3346522 (1967-10-01), Schuster et al.
patent: 3481762 (1969-12-01), Streicher
patent: 3559280 (1971-02-01), Mailhiot et al.
patent: 3598659 (1971-08-01), Klingler et al.
patent: 3632452 (1972-01-01), Matsushima et al.
patent: 3649371 (1972-03-01), Tongyai
patent: 3658603 (1972-04-01), Boyer
patent: 3677827 (1972-07-01), Weaver et al.
patent: 3706604 (1972-12-01), Plaxton
patent: 3709742 (1973-01-01), Jacobs
patent: 3753942 (1973-08-01), Moran
patent: 3806375 (1974-04-01), McLeod et al.
patent: 3879237 (1975-04-01), Faigen et al.
patent: 3899367 (1975-08-01), Mitchell
patent: 3929514 (1975-12-01), Houlihan et al.
patent: 3936445 (1976-02-01), Pfitzner et al.
patent: 4006041 (1977-02-01), Fabregas et al.
patent: 4017335 (1977-04-01), Maloney
patent: 4018934 (1977-04-01), Parliment
patent: 4086182 (1978-04-01), Hengelhaupt et al.
patent: 4140551 (1979-02-01), Jones
patent: 4246030 (1981-01-01), Lipinski
patent: 4296182 (1981-10-01), Matsubayashi et al.
patent: 4298405 (1981-11-01), Saus et al.
patent: 4565585 (1986-01-01), Matsuda
patent: 4591397 (1986-05-01), Jones et al.
patent: 4728365 (1988-03-01), Jarvi
patent: 4781948 (1988-11-01), Caldwell
patent: 4789409 (1988-12-01), Jarvi
patent: 4794139 (1988-12-01), Braden et al.
patent: 4806161 (1989-02-01), Fabiny et al.
patent: 4944812 (1990-07-01), Lindert et al.
patent: 5089349 (1992-02-01), Kaiser
patent: 5104463 (1992-04-01), Menke
patent: RE34272 (1993-06-01), Michaud et al.
patent: 5320872 (1994-06-01), McNeel et al.
patent: 5466297 (1995-11-01), Goodman et al.
patent: 5580063 (1996-12-01), Edwards
patent: 5591275 (1997-01-01), Miyafuji et al.
patent: 5601663 (1997-02-01), Rungta et al.
patent: 5667599 (1997-09-01), Rungta et al.
patent: 5704995 (1998-01-01), Bradley
patent: 5723183 (1998-03-01), Williams et al.
patent: 5919318 (1999-07-01), Brands et al.
patent: 6171409 (2001-01-01), Hamacher et al.
patent: 6193815 (2001-02-01), Wada et al.
patent: 6277214 (2001-08-01), Akhtar et al.
patent: 6309476 (2001-10-01), Ravenscroft et al.
patent: 6527873 (2003-03-01), Ravenscroft et al.
patent: 6576346 (2003-06-01), Ravenscroft et al.
patent: 6805756 (2004-10-01), Claffey et al.
patent: 2003/0079807 (2003-05-01), Ravenscroft et al.
patent: 2003/0221751 (2003-12-01), Claffey et al.
patent: 0264471 (1988-04-01), None
patent: 0264472 (1988-04-01), None
patent: S62-186466 (1987-07-01), None
Birchwood Laboratories, Inc. “Safe, Low Cost, In-house Blackening with the Presto® Black Process,” Birchwood Laboratories, Inc., Eden Prairie, MN; no date (6 pages).
Birchwood Casey, “Guide to Room Temperature Antiquing without Hazardous Effluent”; Birchwood Casey: Eden Prairie, MN, no date.
Birchwood Casey, In-House Blackening with No EPA Regulated Chemicals brochure; Birchwood Casey; Eden Prairie, MN, no date.
Birchwood Casey, “Your Practical Guide and Cost Analysis”; Birchwood Casey; Eden Prairie, MN; Aug. 1997.
Cotton, F. Albert and Wilkinson, Geoffrey, “Advanced Inorganic Chemistry A comprehensive Text”, Interscience Publishers, NY, pp. 847-863, 1962, no month.
Daniels, Christopher; “Black-Oxide Basics: Improved protection, appearance and performance with black oxide finishes”, Products Finishing; Jul. 1992.
Du-Lite, “DULITE's® Guide to Hot Black Oxide Processes”, The Du-Lite Corporation; Middletown CT; 1994, no month.
Godding, A.D.; “The Basics of Black Oxide Finishing: Why to do it, how to do it, applications and advantages”, Products Finishing: Feb. 1990.
Godding, A. D.; “Why Black Oxide? Here's how and why”, Products Finishing; Apr. 1986.
Hubbard-Hall, Activated Black Magic ‘Plus’; The cutting edge for quality and performance when hot black oxiding steel; Hubbard-Hall; Waterbury, CT, no date.
Hubbard-Hall, “Activated Black Magic Plus” http://www.hubbard-hall.com/files/2232001.pdf; Hubbard-Hall, Waterbury, CT; 2003, no month.
Ruhland, Mark; “Blackening of Ferrous Metals;” Birchwood Casey and PF Directory; Eden Prairie, MN, (1999); no month.
National Toxicology Program; “Thiourea—CAS No. 62-56-6: First listed in the Third Annual Report on Carcinogens”; Tenth Report on Carcinogens; date unknown.
Radian Corporation; “N,N'-Diethylthiourea”, NTP Chemical Repository (Radian Corporation); Aug. 29, 1991.
Birchwood Casey, “Material Safety Data Sheet: Presto® Black Brush-On BST4”: Birchwood Laboratories, Inc.: Eden Prairie, MN; Apr. 2, 2001.
Block William V.
Devine Bryce D.
Birchwood Laboratories Inc.
Gray, Plant, Mooty, Mooty & Bennett PA
Lavilla Michael E.
Reid Malcolm D.
LandOfFree
Hybrid metal oxide/organometallic conversion coating for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hybrid metal oxide/organometallic conversion coating for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid metal oxide/organometallic conversion coating for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3713023