(USRE46454) A method and cleaning solution for cleaning electronic substrates, such as a semiconductor wafers, hard disks, photomasks or imprint molds. The method comprises the steps of contacting a surface of the substrate with a cleaning solution comprised of a polyphosphate, and then removing the cleaning solution from the surface. Additional optional steps include applying acoustic energy to the cleaning solution while the cleaning solution is in contact with the surface, and removing the cleaning solution from the surface by rinsing the surface with a rinsing solution with or without the application of acoustic energy. The cleaning solution comprises a polyphosphate, such as any of the water soluble polyphosphates. Depending on the application, the cleaning solution may also comprise a base and/or a quantity of suspended particles. Complexing agents, amines, biocides, surfactants and/or other substances, may also be added to the cleaning solution.
(USRE46454) 1. A method for cleaning a hard disk comprising: contacting a surface of a hard disk with a cleaning solution consisting of a polyphosphate, water and a base, the surface of the hard disk having a plurality of submicron particles adhered to th
(USRE46454) LEGAL DETAILS FOR USRE46454 Actual or expected expiration date=2028-02-07 Legal state=ALIVE Status=GRANTED Event publication date=2015-12-31 Event code=US/APP Event indicator=Pos Event type=Examination events Application details Application country=US US14986590 Application date=2015-12-31 Standardized application number=2015US-14986590 Event publication date=2015-12-31 Event code=US/EXMR Event type=Administrative notifications USPTO Examiner Name Primary Examiner: TORRES VELAZQUEZ, NORCA LIZ Event publication date=2015-12-31 Event code=US/ART Event type=Administrative notifications USPTO Art Group ART=3991 Event publication date=2015-12-31 Event code=US/DK Event type=Examination events Attorney Docket Number Docket Nbr: 99-2130 Customer Nbr: 40758 Event publication date=2015-12-31 Event code=US/ENT Event type=Administrative notifications Business Entity Status: SMALL Event publication date=2015-12-31 Event code=US/AIA Event type=Administrative notifications First Inventor File Indicated: AIA=No Event publication date=2015-12-31 Event code=US/ENTYSTA Event type=Administrative notifications Entity Status Set to Undiscounted Event publication date=2016-04-13 Event code=US/APPFILEREC Event type=Administrative notifications Event type=OAO Filing Receipt Event publication date=2016-04-13 Event code=US/SMALL Event type=Administrative notifications Appl Has Filed a Verified Statement of Micro to Small Entity Status Event publication date=2016-04-18 Event code=US/DOCK Event indicator=Pos Event type=Examination events Case Docketed to Examiner in GAU Event publication date=2016-05-12 Event code=US/IDS Event type=Examination events Event type=OAI Information Disclosure Statement Filed Event publication date=2016-06-16 Event code=US/DOCK Event indicator=Pos Event type=Examination events Case Docketed to Examiner in GAU Event publication date=2017-02-24 Event code=US/NOAM Event indicator=Pos Event type=Examination events Event type=OAO Mail Notice of Allowance Event publication date=2017-05-11 Event code=US/AS Event type=Change of name or address Event type=Reassignment Assignment Owner: FONTANA TECHNOLOGY, CALIFORNIA Effective date of the event=2008-02-07 ASSIGNMENT OF ASSIGNORS INTEREST ASSIGNOR:BECK, MARK JONATHAN REEL/FRAME:042347/0741 Event publication date=2017-05-19 Event code=US/APRDY Event indicator=Pos Event type=Examination events Application Is Considered Ready for Issue Event publication date=2017-06-07 Event code=US/ISSM Event indicator=Pos Event type=Examination events Event type=OAO Issue Notification Mailed Event publication date=2017-06-27 Event code=US/E1 Event indicator=Pos Event type=Event indicating In Force Reissue Publication country=US Publication number=USRE46454 Publication stage Code=E1 Publication date=2017-06-27 Standardized publication number=USRE46454