Patent US4787973A successfully refreshed from Google Patents.
US4787973A
Expired / Lapsed
US
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Device for converting water into mineral water
Assignee: Individual
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Filing: 1987-09-23
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Granted: 1988-11-29
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Expires: 2007-09-23
Abstract
Abstract There is provided a device for converting water into mineral water which comprises a covered or uncovered porous filter and ceramic as a calcium and magnesium source and active carbon as a deodorizer randomly held in the filter whereby when water flows through the filter the water is converted into mineral water.
Inventors
- 👤 Shoichiro Ando
- 👤 Hiroshi Maki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:07
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/60; A47J31/605; C; C02; C02F; C02F1/00; C02F1/001; C02F1/002; C02F1/28; C02F1/283; C02F1/68
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A device for converting water into mineral water, comprising: a tubular porous filter element; a tubular plastic inner case, said tubular porous filter element being received in said inner case, said inner case having a plurality of discontinuous elongated slots formed therein for passing water therethrough; said inner case having opposite ends each of which have openings, one of said opposite ends being externally threaded; a tubular plastic outer case surrounding said inner case except for said externally threaded end thereof; an internally threaded cap in threaded engagement with said externally threaded end of said inner case; and ceramic pellets as a calcium and magnesium source and small active carbon masses as a deodorizer randomly held in said tubular porous filter element.
Claim 2
Independent Claim
122 words
A device for converting water into mineral water, comprising: a tubular porous filter element; a tubular plastic inner case, said tubular porous filter element being received in said inner case, said inner case having a plurality of discontinuous elongated slots formed therein for passing water therethrough; said inner case having opposite ends each of which have openings, one of said opposite ends being externally threaded; a tubular plastic outer case surrounding said inner case except for said externally threaded end thereof; an internally threaded cap in threaded engagement with said externally threaded end of said inner case; and ceramic pellets as a calcium and magnesium source and small active carbon masses as a deodorizer randomly held in said tubular porous filter element.
Claim 3
Dependent Claim
15 words
The device of claim 1, wherein said filter element comprises a tubular porous filter bag.
Claim 4
Dependent Claim
19 words
The device of claim 1, wherein said ceramic and active carbon are provided in an amount ratio of 1:1.
Claim 5
Dependent Claim
23 words
The device of claim 1, wherein said outer case is removable from said inner case so as not to surround said inner case.
Claim 6
Dependent Claim
28 words
The device of claim 1, wherein said outer case is removable from said inner case so as to expose at least a plurality of said slots to water.
Claim 7
Dependent Claim
15 words
The device of claim 1, wherein said tubular porous filter element comprises a nonwoven fabric.
Claim 8
Dependent Claim
11 words
The device of claim 6, wherein said nonwoven fabric is nylon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |