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Mario A Perez, Diane R Wolk, Betty Z Mei, Seyed Abolhassan Angadjivand, Michael D Swan: Charged microfibers, microfibrillated articles and use thereof. 3M Innovative Properties Company, Kent S Kokko, February 1, 2005: US06849329 (70 worldwide citation)

Charged, high-strength, high-modulus, melt-processed microfibers, films having a charged, microfibrillated surface, and methods of making the same are described. Charged microfibrillated articles of the invention can be prepared by imparting fluid energy, typically in the form of high-pressure water ...


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Seyed Abolhassan Angadjivand, Tammy M Chalmers, James F Dyrud, Simon A Mortimer, Scott J Tuman, Cynthia Y Tamaki, Graham J Bostock: Respiratory mask having comfortable inner cover web. 3M Innovative Properties Company, Cecilia Hill, Karl G Hanson, March 28, 2000: US06041782 (63 worldwide citation)

A respiratory mask 1 has a molded, cup-shaped, shape-retaining shell 10 on the concave side of which is a layer of filter material 11 and, on the concave side of the filter material, without any intermediate shape-retaining layer, a layer of nonwoven material 12. The layer of filter material 11 and ...


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Seyed Abolhassan Angadjivand, James E Springett, Thomas I Insley: Crush resistant filtering face mask. 3M Innovative Properties Company, Karl G Hanson, August 2, 2005: US06923182 (57 worldwide citation)

A filtering face mask that includes a mask body that is adapted to fit over the nose and mouth of a person and a harness that is attached to the mask body. The mask body comprises i) a first shaping layer that has been molded; ii) a second shaping layer that has been molded; iii) a filtration layer ...


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Marvin E Jones, Christopher S Lyons, David B Redmond, Jeffrey L Solomon, Seyed Abolhassan Angadjivand: Fluorinated electret. 3M Innovative Properties Company, Karl G Hanson, Allison Johnson, June 25, 2002: US06409806 (49 worldwide citation)

An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.


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Marvin E Jones, Christopher S Lyons, David B Redmond, Jeffrey L Solomon, Seyed Abolhassan Angadjivand: Fluorinated electret. 3M Innovative Properties Company, Karl G Hanson, May 13, 2003: US06562112 (37 worldwide citation)

An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.


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Marvin E Jones, Christopher S Lyons, David B Redmond, Jeffrey L Solomon, Seyed Abolhassan Angadjivand: Fluorinated electret. 3M Innovative Properties Company, Karl G Hanson, Allison Johnson, August 13, 2002: US06432175 (34 worldwide citation)

An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.


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Marvin E Jones, Christopher S Lyons, David B Redmond, Jeffrey L Solomon, Seyed Abolhassan Angadjivand: Method of making fluorinated electrets. 3M Innovative Properties Company, Karl G Hanson, Allison Johnson, December 9, 2003: US06660210 (28 worldwide citation)

An electret is described that includes a plasma surface modified polymeric article having plasma surface fluorination produced by fluorinating the polymeric article.