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Method for improving thickness uniformity of deposited ozone-TEOS silicate glass layers
New Developments in the Metal Finishing Field C o m p i l e d b y A n s e l m K u h n , M e t a l F i n i s h i n g I n f o r m a t i o n Services Ltd.
Patents published in August 2004
Method and Agent for Producing Hydrophobic Layers on Fluoride Layers
Film Deposition
U.S. 6783704 (Merck Patent GmbH) Dombrowski, R.; Frtz, M., et al. Process for the production of hydrophobic layers on optical substrates, which have an alkaline earth metal fluoride or alkali metal fluoride layer as the outermost layer, or consist of alkaline earth metal fluorides, or alkali metal fluorides, by t h e r m a l vapor deposition with polyfluorohydrocarbons in a high vacuum.
Method
U.S. 6783644 (Sony Corp.) Tonosaki, M.; Kitagawa, K. Film formation on plastic or similar substrates uses carbon precursor film formed from C ions at high voltage. Control of Solid State Dimensional Features
US. 6783643 (Harvard College) McMullan, C.J.; Stein, D.M., et al. Surface is subjected to ion flux in vacuum or low pressure, forming adatoms. Surface Enhancer for Making a Molded MetaUCeramic Article
US. 6784225 (3D Systems Inc.) Improved enhancer formulation for use in forming precisionmolded articles from a furnace process uses organometallic zirconia coupling agent in conjunction with a polymer in solvent to inhibit the bleed-through of infiltrant metal in a finished part formed in a single-step furnace process. Method for improving Thickness Uniformity of Deposited Ozone-TEOS Silicate Glass Layers
Method of Stripping Silver from a Printed Circuit Board
US. 6783690 Kologe, D.M.; Larson, B., et al. Method of stripping silver from a printed circuit board without attacking the underlying base metal. The stripping solution comprises an oxidizing agent, an
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CLARIFIERS ~ .
• 5-1000 GPM flow • Parallel plate design for efficient sohds settling with I removable plate racks -" ,- I " Floculatlon tank with mixer ) I mstandard I " Optional catwalk and ladder .,'~.-.,~ t I available L~'-*-- °l I " Heavy duty epoxy coated I steel construction ~:1 ° Meets EPA discharge hmrts m for mdustnal waste water m
alkaline pH adjuster, and a silver solubilizing agent. After the silver has been sufficiently removed from the surface of the printed circuit board, the printed circuit board is contacted with a neutralization solution to remove any smut remaining on the surface. The silver stripping solution does not contain cyanide or chromium and does not require the use of anodic current. Reader queries relating to patents pubhshed in Metal Finishing or to advise on patent searches of the approximately 30 milhon patents in the public domain can be e-maded to Anselm Kuhn, Metal Finishing Informatmn Services Ltd., at [email protected]. The patents summarized are a sampling of some 500 surface-finishing-related patents published every month. Almost all patents can be v~ewed on the Internet and downloaded or pnnted, in many cases free of charge, at www.uspto.gov and www.delphion.com. I~f
WASTE TREATMENT SYSTEMS • 1-300 GPM flow • Skid mounted or component installation m your plant • EPA compltance our spectalty *
Call about our used equipment inventory
I
U.S. 6784122 (Micron Technology Inc.) Iyer, R. Method for depositing highly conformal silicate glass layers via chemical vapor deposition through the reaction of TEOS and 03 comprises placing an inprocess semiconductor wafer haying multiple surface constituents in a plasma-enhanced chemical vapor deposition chamber.
;&
capacrty • Uses low cost gas, steam, hot water or electrical heat source to reduce sludge up to 75% • Stainless steel mternal parts • Space savmg design allows unit to fit under the filter press or elsewhere m the plant • Meets EPA requtrement for sludge reduction
IET! EM Circle
February 2005
SLUDGE DRYERS • 1-75cu ft
051 on
FILTER PRESSES • 5-200 cu ft capactty • Automatic
hydrauhc closure or our cost
• • • •
saving manual closure Heavy duty steel construction Po]ypro gasketed or dlaphram membrane plates Standard razes or custom built to your specs Used in EPA approved treatment systems
c o m , . , , , , . Pr,o . . F a . , * , , . . y .
O.a,,,y
777 E 82 S t , Cleveland, Ohio 44103 216-881-7900 • Fax 216-881-8950 h t t p / / w w w m e t c h e r n corn e-mail info@metchem corn
reader information card or go
to www.thru.to/webconnect 59
Patents published in August 2004
Method and Agent for Producing Hydrophobic Layers on Fluoride Layers
Film Deposition
U.S. 6783704 (Merck Patent GmbH) Dombrowski, R.; Frtz, M., et al. Process for the production of hydrophobic layers on optical substrates, which have an alkaline earth metal fluoride or alkali metal fluoride layer as the outermost layer, or consist of alkaline earth metal fluorides, or alkali metal fluorides, by t h e r m a l vapor deposition with polyfluorohydrocarbons in a high vacuum.
Method
U.S. 6783644 (Sony Corp.) Tonosaki, M.; Kitagawa, K. Film formation on plastic or similar substrates uses carbon precursor film formed from C ions at high voltage. Control of Solid State Dimensional Features
US. 6783643 (Harvard College) McMullan, C.J.; Stein, D.M., et al. Surface is subjected to ion flux in vacuum or low pressure, forming adatoms. Surface Enhancer for Making a Molded MetaUCeramic Article
US. 6784225 (3D Systems Inc.) Improved enhancer formulation for use in forming precisionmolded articles from a furnace process uses organometallic zirconia coupling agent in conjunction with a polymer in solvent to inhibit the bleed-through of infiltrant metal in a finished part formed in a single-step furnace process. Method for improving Thickness Uniformity of Deposited Ozone-TEOS Silicate Glass Layers
Method of Stripping Silver from a Printed Circuit Board
US. 6783690 Kologe, D.M.; Larson, B., et al. Method of stripping silver from a printed circuit board without attacking the underlying base metal. The stripping solution comprises an oxidizing agent, an
!
CLARIFIERS ~ .
• 5-1000 GPM flow • Parallel plate design for efficient sohds settling with I removable plate racks -" ,- I " Floculatlon tank with mixer ) I mstandard I " Optional catwalk and ladder .,'~.-.,~ t I available L~'-*-- °l I " Heavy duty epoxy coated I steel construction ~:1 ° Meets EPA discharge hmrts m for mdustnal waste water m
alkaline pH adjuster, and a silver solubilizing agent. After the silver has been sufficiently removed from the surface of the printed circuit board, the printed circuit board is contacted with a neutralization solution to remove any smut remaining on the surface. The silver stripping solution does not contain cyanide or chromium and does not require the use of anodic current. Reader queries relating to patents pubhshed in Metal Finishing or to advise on patent searches of the approximately 30 milhon patents in the public domain can be e-maded to Anselm Kuhn, Metal Finishing Informatmn Services Ltd., at [email protected]. The patents summarized are a sampling of some 500 surface-finishing-related patents published every month. Almost all patents can be v~ewed on the Internet and downloaded or pnnted, in many cases free of charge, at www.uspto.gov and www.delphion.com. I~f
WASTE TREATMENT SYSTEMS • 1-300 GPM flow • Skid mounted or component installation m your plant • EPA compltance our spectalty *
Call about our used equipment inventory
I
U.S. 6784122 (Micron Technology Inc.) Iyer, R. Method for depositing highly conformal silicate glass layers via chemical vapor deposition through the reaction of TEOS and 03 comprises placing an inprocess semiconductor wafer haying multiple surface constituents in a plasma-enhanced chemical vapor deposition chamber.
;&
capacrty • Uses low cost gas, steam, hot water or electrical heat source to reduce sludge up to 75% • Stainless steel mternal parts • Space savmg design allows unit to fit under the filter press or elsewhere m the plant • Meets EPA requtrement for sludge reduction
IET! EM Circle
February 2005
SLUDGE DRYERS • 1-75cu ft
051 on
FILTER PRESSES • 5-200 cu ft capactty • Automatic
hydrauhc closure or our cost
• • • •
saving manual closure Heavy duty steel construction Po]ypro gasketed or dlaphram membrane plates Standard razes or custom built to your specs Used in EPA approved treatment systems
c o m , . , , , , . Pr,o . . F a . , * , , . . y .
O.a,,,y
777 E 82 S t , Cleveland, Ohio 44103 216-881-7900 • Fax 216-881-8950 h t t p / / w w w m e t c h e r n corn e-mail info@metchem corn
reader information card or go
to www.thru.to/webconnect 59