US Patent No: 4,397,799

Number of patents in Portfolio can not be more than 2000

Process for drying and expanding microspheres

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention relates to a process for drying and expanding microspheres whereby first a dispersion of the microspheres in an inert liquid is prepared. This dispersion is then atomized in a hot inert gas. The process of the invention is advantageously carried out in a spray dryer.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KEMANORD ABSTOCKHOLM18

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Edgren, Anders T Sundsvall, SE 1 38
Svedberg, Lars-Olof Kvissleby, SE 3 48

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Patent Info (Count) # Cites Year
 
NOVARTIS AG (8)
7,871,598 Stable metal ion-lipid powdered pharmaceutical compositions for drug delivery and methods of use 0 2000
7,442,388 Phospholipid-based powders for drug delivery 4 2001
8,168,223 Engineered particles and methods of use 0 2001
7,306,787 Engineered particles and methods of use 13 2002
7,368,102 Pulmonary delivery of aminoglycosides 9 2002
8,404,217 Formulation for pulmonary administration of antifungal agents, and associated methods of manufacture and use 0 2005
8,246,934 Respiratory dispersion for metered dose inhalers comprising perforated microstructures 0 2010
8,349,294 Stable metal ion-lipid powdered pharmaceutical compositions for drug delivery and methods of use 0 2010
 
SOVEREIGN HOLDINGS, LLC (7)
4,843,104 Syntactic polymer foam compositions containing microsphere fillers 18 1987
4,908,391 Opacifiers for paints and coatings 5 1988
5,011,862 Coating media containing low density composite opacifiers 21 1989
4,912,139 Preparation of opacifier intermediates 8 1989
4,898,892 Methods for preparing opaque coatings and applying the same 5 1989
4,898,894 Film forming binders containing low density composite opacifiers 5 1989
4,888,241 Low density composite opacifiers 5 1989
 
HENKEL CORPORATION (5)
4,722,943 Composition and process for drying and expanding microspheres 53 1987
4,829,094 Thermoplastic microspheres 30 1987
5,180,752 Process for making dry microspheres 9 1990
5,342,689 Thermoplastic microspheres 5 1992
7,368,167 Ultra low density thermally clad microspheres and method of making same 1 2004
 
MATSUMOTO YUSHI-SEIYAKU CO., LTD. (3)
7,807,729 Heat-expanded microspheres, production process thereof, heat-expandable microspheres and application thereof 1 2004
8,129,020 Thermally expanded microspheres and a process for producing the same 0 2006
8,486,531 Thermally expanded microspheres and a process for producing the same 0 2012
 
CASCO NOBEL AB (2)
5,484,815 Process for preparation of expanded thermoplastic microspheres 9 1994
5,585,119 Device for preparation of expanded thermoplastic microspheres 8 1995
 
DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD. (2)
5,753,156 Process for producing non-scattering hollow plastic balloons 4 1996
6,784,215 Production process of non-flying plastic mircoballoons 0 2001
 
ELC MANAGEMENT LLC (2)
8,383,160 Compositions comprising solid particles entrapped in collapsed polymeric microspheres, and methods of making the same 1 2011
8,632,816 Compositions comprising solid particles entrapped in collapsed polymeric microspheres, and methods of making the same 0 2012
 
SULZER CHEMTECH AG (2)
6,447,627 Process for manufacturing moulded articles made of plastics, cellulose or wood pulp and provided with cavities 2 2000
6,875,298 Process for manufacturing molded articles provided with cavities 1 2002
 
DOW CORNING S.A. (1)
6,194,476 Compressible silicone composition 6 1999
 
GENERAL ELECTRIC COMPANY (1)
6,884,507 Use of high modulus, impact resistant foams for structural components 2 2003
 
HENKEL LOCTITE CORPORATION (1)
5,660,901 Oriented expanded molded products 24 1994
 
NOVARTIS PHARMA AG (1)
6,565,885 Methods of spray drying pharmaceutical compositions 61 1998
 
ROHM AND HAAS ELECTRONIC MATERIALS CMP HOLDINGS, INC. (1)
6,439,989 Polymeric polishing pad having continuously regenerated work surface 16 1999
 
TYCO INTERNATIONAL LTD., A CORPORATION OF BERMUDA (1)
6,235,801 Method of expanding a gel material 10 1999
 
WACKER-CHEMIE GMBH (1)
5,998,548 Compressible, sulfur-containing silicone rubber 9 1998