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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US393909114 Feb 197517 Feb 1976The United States of America as represented by the Librarian of CongressComposition for use in deacidification of paper
US396954924 Dic 197413 Jul 1976The United States of America as represented by the Librarian of CongressMethod of deacidifying paper
US405127623 Feb 197627 Sep 1977The United States Government as represented by the Librarian of CongressMethod of deacidifying paper
US431896321 Ene 19809 Mar 1982Treatment of cellulosic materials
US433947920 Dic 197413 Jul 1982Treatment of cellulose
US452284325 Ene 198411 Jun 1985Deacidification of library materials
US47241585 Mar 19859 Feb 1988The British LibraryTreatment of archival material
US480843312 Sep 198628 Feb 1989The British LibraryTreatment of archival material
US48606859 Mar 198729 Ago 1989Treatment of cellulosic materials
US510499720 Dic 199014 Abr 1992FMC CorporationMass treatment of cellulosic materials
US51205006 Feb 19909 Jun 1992Battelle-Institue e.V.Process and device for nonpolluting mass deacidification of books and other paper products
US51377607 May 199111 Ago 1992Document ReprocessorsDeacidification process
US520807213 Nov 19914 May 1993FMC CorporationMass treatment of cellulosic materials
US526424316 Jun 199223 Nov 1993FMC CorporationMass cellulose deacidification process
US528232023 Ago 19911 Feb 1994FMC CorporationBook drying process
US532255820 Nov 199221 Jun 1994Battelle Ingenieurtechnik GmbHNeutralizing agent for paper products
US53935622 Mar 199328 Feb 1995The United States of America as represented by the Librarian of CongressMethod of preserving and storing books and other papers
US540973631 Ago 199325 Abr 1995Preservation Technologies, Inc.Deacidification of cellulose based materials using perfluorinated carriers
US543382721 Dic 199318 Jul 1995Pulp and Paper Research Institute of CanadaMethod for the deacidification of papers and books
US545680127 Oct 199310 Oct 1995Huels AktiengesellschaftStorage-stable solutions of carbonated magnesium ethylate in ethanol and their preparation and use
US60804483 Abr 199827 Jun 2000Preservation Technologies LPDeacidification of cellulose based materials using hydrofluoroether carriers
US621416513 Jul 199910 Abr 2001Joseph Zicherman
Donald Perkins
Method for deacidification of papers and books by fluidizing a bed of dry alkaline particles
US629468219 Jun 200025 Sep 2001E. I. du Pont de Nemours and CompanyAlkoxides with alkaline earths and titanium, zirconium and/or hafnium, their production and use
US634209812 May 200029 Ene 2002Preservation Technologies LPDeacidification of cellulose based materials using hydrofluoroether carriers
US66418772 Mar 20014 Nov 2003Article and method for retarding the deterioration rate of acidic paper
US66768565 Jul 200013 Ene 2004Deacidification treatment of printed cellulosic materials
US689045523 Ene 200410 May 2005The Sherwin-Williams CompanyArchival spray composition
US77587779 Sep 200520 Jul 2010Konica Minolta Opto, Inc.Polarizing plate protecting film and its manufacturing method, polarizing plate and liquid crystal display
US78200097 Feb 200726 Oct 2010The Royal Institution for the Advancement of Learning/McGill UniversityCellulose composites comprising hydrophobic particles and their use in paper products

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