# US 5,863,431 A · Disposable filter with indicia

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- Number: US 5,863,431 A
- Document ID: US5863431A
- Status: Granted
- Kind: A
- Application number: 08/691,207
- Filed: 1996-08-01
- Granted: 1999-01-26
- Earliest claimed: 1995-09-15
- Inventors: Diana Salzburg
- Web page: https://patentgrep.com/patent/US5863431A

## CPC

- A47J 31/08: Paper filter inlays therefor {to be disposed after use}
- A47J 2031/0694: {with indicating means to aid the measurement of ground coffee contained therein}
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES

## Abstract

A water permeable disposable filter, the filter including a side wall having an open top region and a sealed bottom region with indicia means is provided. The filter is provided with interior and exterior surfaces, the indicia means located on the interior surface of the side wall of the filter for indicating the amount of ground coffee to be filled into said filter in order to produce a desired quantity of the brewed coffee beverage. The indicia means may include both numbering and level graduations.

## Claims

### Claim 1

A filter liner for filtering ground coffee to produce a brewed coffee beverage, said liner comprising:
a water permeable disposable paper filter, said paper filter having a side wall, an open top region and a bottom region, said side wall of said filter having first and second side edges joined together by crimping said first and second side edges together in order to form a continuous crimped side wall of said filter; and
visible indicia means on the surface of said side wall for indicating the amount of ground coffee to be filled into said filter in order to produce a desired quantity of the brewed coffee beverage, wherein said indicia means is embossed on the surface of said side wall of said filter and said indicia means is viewable on said filter.

### Claim 2 (depends on 1)

The filter liner of claim 1, wherein said indicia means is located on the interior surface of said side wall of said filter.

### Claim 3 (depends on 1)

The filter liner of claim 1, wherein said water permeable disposable filter is cone shaped.

### Claim 4 (depends on 1)

The filter liner of claim 1, wherein said water permeable disposable filter is formed in the shape of a basket.

### Claim 5 (depends on 1)

The filter liner of claim 1 further comprising second indicia means opposite said first indicia means for indicating the amount of ground coffee to be filled into said filter in order to produce a desired quantity of the brewed coffee beverage.

### Claim 6 (depends on 1)

The filter liner of claim 1, wherein said bottom region is provided with first and second bottom edges joined together by crimping said first and second bottom edges together in order to form a continuous crimped bottom region.

### Claim 7

A filter liner for filtering ground coffee to produce a brewed coffee beverage, said liner comprising:
a water permeable disposable paper filter, said paper filter having a side wall, an open top region and a bottom region, said side wall of said filter having first and second side edges joined together by crimping said first and second side edges together in order to form a continuous crimped side wall of said filter; and
visible indicia means on the surface of said side wall for indicating the amount of ground coffee to be filled into said filter in order to produce a desired quantity of the brewed coffee beverage, wherein said indicia means is printed on the surface of said side wall of said filter and said indicia means is viewable on said filter.

### Claim 8 (depends on 7)

The filter liner of claim 7, wherein said indicia means is printed with a dye, said dye being visible to the naked eye.