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US 11,911,927 B2Granted
Wood-encased pencil
OwnerChristian Sprogar, Ingolf Kahle +1inventors
InventorsChristian Sprogar, Ingolf Kahle, Thomas Heidenreiter
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Abstract
A description is given of a wood-encased pencil comprising a casing and a core, the casing consisting of wood material impregnated with a saccharide component, the saccharide component comprising at least one mono-, di- or oligosaccharide in solution in a vehicle.
Claims23
A pencil, comprising:
- a casing including
- a wood material and
- a saccharide component impregnated in the wood material, the saccharide component comprising at least one monosaccharide and at least one oligosaccharide, wherein a vehicle comprises the saccharide component in a solution;
- and
- a core enclosed in the casing, the core including volatile constituents, wherein at least 90% by weight of the volatile constituents are retained in the core by the casing.
2 more elements
A method of producing a pencil having impregnated wood, the method comprising:
- impregnating wood for from 10 minutes to 24 hours at a temperature of 0° C. to 90° C. with a saccharide component comprising at least one monosaccharide and at least one oligosaccharide, wherein a vehicle comprises the saccharide component in a solution, and
- enclosing a core including volatile constituents in the impregnated wood to produce at least one pencil, wherein at least 90% by weight of the volatile constituents are retained in the core by the impregnated wood.
A method of producing a pencil having solvent barrier properties, the method comprising:
- impregnating a wooden pencil casing for from 10 minutes to 24 hours at a temperature of 0° C. to 90° C. with a saccharide component comprising at least one monosaccharide and at least one oligosaccharide, wherein a vehicle comprises the saccharide component in a solution, and
- enclosing a core including volatile constituents in the impregnated wooden pencil casing to produce at least one pencil, wherein at least 90% by weight of the volatile constituents are retained in the core by the impregnated wooden pencil casing.
Dependencies are inferred from the claim text.