# US 7,611,672 B1 · Measurement cell

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- Number: US 7,611,672 B1
- Document ID: US7611672B1
- Status: Granted
- Kind: B1
- Application number: 12/092,212
- Filed: 2006-11-27
- Published: 2009-10-22
- Granted: 2009-11-03
- Earliest claimed: 2005-11-29
- Assignees: Panasonic Corporation
- Inventors: Atsushi Fukunaga; Eiji Noguchi; Takahiro Nakaminami
- Web page: https://patentgrep.com/patent/US7611672B1

## CPC

- G01N 21/11: Filling or emptying of cuvettes
- G01N 21/03: Cuvette constructions
- G01N 21/15: Preventing contamination of the components of the optical system or obstruction of the light path
- G01N 2021/0325: {Cells for testing reactions, e.g. containing reagents}
- G01N 2021/036: {transformable, modifiable}
- G01N 2021/152: {Scraping; Brushing; Moving band}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A measurement cell 1 includes: an opening part 106 for supplying a sample into a sample holding part 105 for holding a sample; an optical window portion for allowing light to enter the sample holding part 105 and allowing light to exit the sample holding part 105; a protection cover 101 for protecting the optical window portion, provided along the circumference of the sample holding part 105; and a first protection-cover-holding part 102 for holding the protection cover 101 at the position where the optical window portion is covered.

## Claims

### Claim 1

A measurement cell comprising:
a sample holding part for holding a sample;
an opening part for supplying the sample to an inner portion of said sample holding part;
an optical window portion for allowing light to enter said sample holding part, and allowing light to exit said sample holding part;
a protection cover for protecting said optical window portion, provided movably along the circumference of said sample holding part; and
a first protection-cover-holding part for holding said protection cover at a position where said optical window portion is covered with said protection cover.

### Claim 2 (depends on 1)

The measurement cell in accordance with claim 1, further comprising a second protection-cover-holding part for holding said protection cover at the position where said optical window portion and said opening part are being exposed.

### Claim 3 (depends on 1)

The measurement cell in accordance with claim 1, further comprising a third protection-cover-holding part for holding said protection cover at the position where said opening part is being covered with said protection cover.

### Claim 4 (depends on 1)

The measurement cell in accordance with claim 1, further comprising an absorbent disposed inside said protection cover.

### Claim 5 (depends on 2)

The measurement cell in accordance with claim 2, further comprising an absorbent disposed inside said protection cover.

### Claim 6 (depends on 3)

The measurement cell in accordance with claim 3, further comprising an absorbent disposed inside said protection cover.