Sample handling plate

• US 7,410,617 B2
• Filed: 12/10/2004
• Issued: 08/12/2008
• Est. Priority Date: 08/08/2003
• Status: Expired due to Fees

• Current Assignee: Enplas Corporation
• Original Assignee: Enplas Corporation
• Inventors: Sakamoto, Yasuyuki
• Primary Examiner(s): Warden; Jill
• Assistant Examiner(s): Levkovich; Natalia
• Application Number:
  US11/009,349
• Publication Number:
  US 20050106074A1
• Time in Patent Office: 1,341 Days
• Field of Search: 422/102, 422/104
• US Class Current: 422/553
• CPC Class Codes: B01L 2200/12 Specific details about manufacturing devices
• CPC Class Codes: B01L 2300/0819 Microarrays; Biochips
• CPC Class Codes: B01L 3/5085 for multiple samples, e.g. microtitration plates
• CPC Class Codes: B29C 2045/0043 preventing shrinkage by reducing the wall thickness of the moulded article
• CPC Class Codes: B29C 45/0025 Preventing defects on the moulded article, e.g. weld lines, shrinkage marks preventing defects on the preformed parts or layers B29C45/14836
• CPC Class Codes: G01N 21/0303 Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment G01N21/031 - G01N21/15 take precedence

Abstract

A sample handling plate 1 has wells 4 on the side of the surface 1a thereof, and lightening portions 6 on the side of the reverse 1b thereof, each of the wells 4 substantially having the same shape and volume as those of each of the lightening portions 6 so that the amount of shrinkage on the side of the surface 1a is equal to that on the side of the reverse 1b during cooling after the injection molding.

Claims

1. A sample handling plate comprising:

a rectangular plate member having a surface and a reverse, said plate member having a thickness of from about 1.0 mm to about 1.5 mm;

thousands of fine recessed portions formed in said surface of the plate member, said fine recessed portions being arranged at regular intervals of from about 0.3 mm to about 1.0 mm, each of said fine recessed portions having a volume of tens nanoliters; and

a recessed portion formed in said reverse of the plate member, said recessed portion having a volume which is equal to a total volume of all of said fine recessed portions.

5. A sample handling plate as set forth in claim 1, wherein each of said fine recessed portions has a circular or square opening, the diameter of said circular opening or the length of one side of said square opening is in the range of from about 0.2 mm to about 1.0 mm.

7. A sample handling plate as set forth in claim 1, wherein said fine recessed portions are arranged at regular intervals of from about 0.3 mm to 0.5 mm.

9. A sample handling plate as set forth in claim 1, wherein each of said fine recessed portions has a circular or square opening, the diameter of said circular opening or the length of one side of said square opening is in the range of from about 0.2 mm to about 0.5 mm.

2. A sample handling plate comprising:

a rectangular plate member having a surface and a reverse, said plate member having a thickness of from about 1.0 mm to about 1.5 mm;

thousands of first fine recessed portions formed in said surface of the plate member, said first fine recessed portions being arranged at regular intervals of from about 0.3 mm to about 1.0 mm, each of said first fine recessed portions having a volume of tens nanoliters; and

a plurality of second fine recessed portions formed in said reverse of the plate member, said second fine recessed portions having a total volume which is equal to a total volume of all of said first fine recessed portions.

3. A sample handling plate as set forth in claim 2, wherein each of said second fine recessed portions has the same shape as that of each of said first fine recessed portions.

4. A sample handling plate as set forth in claim 3, wherein said second fine recessed portions are arranged at the same intervals as those of said first fine recessed portions so as to be displaced from said first fine recessed portion by half of each of said intervals.

6. A sample handling plate as set forth in claim 2, wherein each of said first fine recessed portions has a circular or square opening, the diameter of said circular opening or the length of one side of said square opening is in the range of from about 0.2 mm to about 1.0 mm.

8. A sample handling plate as set forth in claim 2, wherein said first fine recessed portions are arranged at regular intervals of from about 0.3 mm to about 0.5 mm.

10. A sample handling plate as set forth in claim 2, wherein each of said first fine recessed portions has a circular or square opening, the diameter of said circular opening or the length of one side of said square opening is in the range of from about 0.2 mm to about 0.5 mm.

11. A sample handling plate comprising:

a plate body having a surface and a reverse;

thousands of fine recessed portions formed in said surface of the plate body, each of said fine recessed portions having a volume of tens nanoliters; and

a recessed portion formed in said reverse of the plate body, said recessed portion being formed so as to have a volume which is equal to a total volume of all of said fine recessed portions.

12. A sample handling plate comprising:

a plate body having a surface and a reverse;

thousands of first fine recessed portions formed in said surface of the plate body, each of said first fine recessed portions having a volume of tens nanoliters; and

a plurality of second fine recessed portions formed in said reverse of the plate body, said second fine recessed portions being formed so as to have a total volume which is equal to a total volume of all of said first fine recessed portions.

13. A sample handling plate as set forth in claim 12, wherein each of said second fine recessed portions has the same shape as that of each of said first fine recessed portions.

14. A sample handling plate as set forth in claim 13, wherein said first fine recessed portions are arranged at regular intervals, and said second fine recessed portions are arranged at the same intervals as those of said first fine recessed portions so as to be displaced from said first fine recessed portion by half of each of said intervals.

15. A sample handling plate comprising:

a plate body having a surface and a reverse;

a plurality of fine recessed portions formed in said surface of the plate body; and

a recessed portion formed in said reverse of the plate body, said recessed portion being formed so as to have a volume which is equal to a total volume of all of said fine recessed portions.

16. A sample handling plate comprising:

a plate body having a surface and a reverse;

a plurality of first fine recessed portions formed in said surface of the plate body; and

a plurality of second fine recessed portions formed in said reverse of the plate body, said second fine recessed portions being formed so as to have a total volume which is equal to a total volume of all of said first fine recessed portions.

17. A sample handling plate as set forth in claim 16, wherein each of said second fine recessed portions has the same shape as that of each of said first fine recessed portions.

18. A sample handling plate as set forth in claim 17, wherein said first fine recessed portions are arranged at regular intervals, and said second fine recessed portions are arranged at the same intervals as those of said first fine recessed portions so as to be displaced from said first fine recessed portion by half of each of said intervals.