Back to results
US 2021/0275947 A1Published application
Solid Phase Extraction Disk and Manufacturing Method
OwnerKevin Charles Dinneaninventor
Life of this patent
Estimating the term…
Abstract
Solid phase extraction (SPE) disks are manufactured by introducing a series of components and/or liquid suspensions into a mold and evacuating the liquid to form a cohesive filter or SPE disk. After all the free liquid has been substantially removed, the SPE disk is removed from the mold and dried. SPE disks are for use in analytical chemistry procedures.
Claims6
A solid phase extraction disk comprising:
- a. a top circular surface consisting of a cylindrical layer of wet-laid glass fiber;
- and
- b. a middle cylindrical layer underlying the top glass fiber layer containing wet-laid glass fiber and one or more sorbents;
- and
- c. a glass fiber mesh or filter paper underlying the glass fiber and sorbent layer creating a bottom circular surface;
- the three components forming a cohesive unit.
3 more elements
A solid phase extraction disk comprising:
- a. a top circular surface consisting of a cylindrical layer of wet-laid glass fiber;
- and
- b. a middle cylindrical layer underlying the top glass fiber layer containing wet-laid glass fiber and one or more sorbents;
- and
- c. a cylindrical layer of wet-laid glass fiber underlying the glass fiber and sorbent layer;
- and
- d. a glass fiber mesh or filter paper underlying the second glass fiber layer creating a bottom circular surface;
- the four components forming a cohesive unit.
5 more elements
A solid phase extraction disk comprising:
- a. a top circular surface consisting of a cylindrical layer of wet-laid glass fiber;
- and
- b. a middle cylindrical layer underlying the top glass fiber layer containing wet-laid glass fiber and one or more sorbents;
- and
- c. a cylindrical layer of wet-laid glass fiber underlying the glass fiber and sorbent layer creating a bottom circular surface;
- the three components forming a cohesive unit.
3 more elements
Dependencies are inferred from the claim text.