HALVAR YOUNG LOKEN
Pilots at Dark Holw Rd, Roseland, VA

License number
Virginia A1141004
Issued Date
Jun 2015
Expiration Date
Jun 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
2500 Dark Hollow Rd, Roseland, VA 22967

Professional information

Halvar Loken Photo 1

Composite Panels Having Improved Fluid Impermeability

US Patent:
2009025, Oct 8, 2009
Filed:
Apr 3, 2009
Appl. No.:
12/417691
Inventors:
Subhotosh Khan - Midlothian VA, US
Halvar Young Loken - Roseland VA, US
Assignee:
E.I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
B32B 3/12, B32B 5/02, B05D 3/10
US Classification:
428116, 428338, 427384
Abstract:
A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0.01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.


Halvar Loken Photo 2

Composite Panels Having Improved Fluid Impermeability

US Patent:
8206808, Jun 26, 2012
Filed:
Jun 2, 2011
Appl. No.:
13/033914
Inventors:
Subhotosh Khan - Midlothian VA, US
Halvar Young Loken - Roseland VA, US
Assignee:
E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:
B32B 3/12, B32B 23/02, B32B 27/04, C08K 7/02, C08L 63/00, C08L 63/02
US Classification:
428116, 428118, 428394, 428395, 428396, 523448, 525 58, 525107, 525113, 525114, 525118, 525120, 525121, 525423, 525438, 525454, 525480, 525502, 525504, 525508, 525523, 525524, 525526
Abstract:
A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0. 01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.