US3982897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter and detector and methods of using same in the removal and detection of carbon monoxide from, and in, a gas stream
Assignee: Individual
•
Filing: 1976-02-19
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Granted: 1976-09-28
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Expires: 1996-02-19
Abstract
Abstract The quantity of carbon monoxide removed from a gas stream by a filter containing hemoglobin is greatly enhanced in quantity when the hemoglobin is accompanied by another factor present in blood. The quantity of carbon monoxide removable from a gas stream by hemoglobin depends upon the equivalent weight of the hemoglobin. However, in the presence of the additional factor, the quantity of carbon monoxide removed is substantially greater than can be accounted for by the stoichiometry of the hemoglobin alone.
Inventors
- 👤 Israel Herbert Scheinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:36
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/14; B; B01; B01D; B01D39/00; B01D39/02; B01D39/04; B01D53/00; B01D53/02; C; C12; C12Y; C12Y102/00; C12Y102/02; C12Y102/02004; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998; Y10T436/205831; Y10T436/25; Y10T436/25375; Y10T436/25875
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
25 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough and a composition
Claim 2
Dependent Claim
25 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough and a composition
Claim 3
Dependent Claim
12 words
A filter as defined in claim 1, wherein said composition includes an
Claim 4
Dependent Claim
13 words
The filter as defined in claim 1, wherein said composition is free of
Claim 5
Dependent Claim
15 words
The filter as defined in claim 1, wherein said filter is a portion of a
Claim 6
Dependent Claim
22 words
The filter as defined in claim 1, wherein said container includes a frangible member for protecting said composition prior to putting said
Claim 7
Dependent Claim
12 words
The filter as defined in claim 1, wherein said composition includes an
Claim 8
Dependent Claim
24 words
The filter as defined in claim 1, further comprising a solid absorbent for holding said composition and facilitating the transit of a gas stream
Claim 9
Dependent Claim
12 words
The filter as defined in claim 7, wherein said absorbent is selected
Claim 10
Dependent Claim
12 words
A filter as defined in claim 1, wherein said composition includes mother
Claim 11
Dependent Claim
11 words
The filter as defined in claim 9, wherein said composition further
Claim 12
Dependent Claim
35 words
The filter as defined in claim 9, wherein said composition includes a buffer for holding the pH of said composition between about 6 and 8.5 and a compatible reductant effective for preventing conversion of hemoglobin
Claim 13
Dependent Claim
25 words
The filter as defined in claim 11, wherein the ratio of the number of equivalents of said reductant to the number of equivalents of hemoglobin
Claim 14
Dependent Claim
23 words
The filter as defined in claim 11, wherein said reductant is selected from the group consisting of ascorbic acid, methylene white and dithionite
Claim 15
Dependent Claim
48 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough, and a composition in said container, said composition including packed red cells free of such components as can be removed by washing said packed red cells
Claim 16
Dependent Claim
48 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough, and a composition in said container, said composition including packed red cells free of such components as can be removed by washing said packed red cells
Claim 17
Dependent Claim
14 words
The filter as defined in claim 14, wherein said filter is a portion of
Claim 18
Dependent Claim
22 words
The filter as defined in claim 14, wherein said container includes a frangible member for protecting said composition prior to putting said
Claim 19
Dependent Claim
12 words
The filter as defined in claim 14, wherein said composition includes an
Claim 20
Dependent Claim
24 words
The filter as defined in claim 14, further comprising a solid absorbent for holding said composition and facilitating the transit of a gas stream
Claim 21
Dependent Claim
22 words
The filter as defined in claim 18, wherein said absorbent is selected from the group consisting of absorbent cellulose and activated carbon.
Claim 22
Dependent Claim
35 words
A filter as defined in claim 14, wherein said composition includes a buffer for holding the pH of said composition between about 6 and 8.5 and a compatible reductant effective for preventing conversion of hemoglobin
Claim 23
Dependent Claim
25 words
A filter as defined in claim 20, wherein the ratio of the number of equivalents of said reductant to the number of equivalents of hemoglobin
Claim 24
Dependent Claim
23 words
The filter as defined in claim 20, wherein said reductant is selected from the group consisting of ascorbic acid, methylene white and dithionite
Claim 25
Dependent Claim
34 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough, and a composition in said container, said composition including red blood cell
Claim 26
Dependent Claim
34 words
A filter for the removal of CO from a gas stream, comprising a container suitable for transit of a gas stream therethrough, and a composition in said container, said composition including red blood cell
Claim 27
Dependent Claim
14 words
The filter as defined in claim 23, wherein said filter is a portion of
Claim 28
Dependent Claim
12 words
The filter as defined in claim 23, wherein said composition includes an
Claim 29
Dependent Claim
22 words
The filter as defined in claim 23, wherein said container includes a frangible member for protecting said composition prior to putting said
Claim 30
Dependent Claim
24 words
The filter as defined in claim 23, further comprising a solid absorbent for holding said composition and facilitating the transit of a gas stream
Claim 31
Dependent Claim
22 words
The filter as defined in claim 27, wherein said absorbent is selected from the group consisting of absorbent cellulose and activated carbon.
Claim 32
Dependent Claim
35 words
The filter as defined in claim 23, wherein said composition includes a buffer for holding the pH of said composition between about 6 and 8.5 and a compatible reductant effective for preventing conversion of hemoglobin
Claim 33
Dependent Claim
25 words
The filter as defined in claim 29, wherein the ratio of the number of equivalents of said reductant to the number of equivalents of hemoglobin
Claim 34
Dependent Claim
23 words
The filter as defined in claim 29, wherein said reductant is selected from the group consisting of ascorbic acid, methylene white and dithionite
Claim 35
Independent Claim
23 words
A method of absorbing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition
Claim 36
Independent Claim
23 words
A method of absorbing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition
Claim 37
Dependent Claim
11 words
The method as defined in claim 32, wherein said composition further
Claim 38
Dependent Claim
35 words
The method as defined in claim 32, wherein said composition further includes a buffer for holding said composition at a pH between 6 and 8.5, and a compatible reductant effective for preventing the conversion of
Claim 39
Independent Claim
36 words
A method of removing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition including packed red cells free of such components as can be removed by
Claim 40
Independent Claim
36 words
A method of removing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition including packed red cells free of such components as can be removed by
Claim 41
Dependent Claim
35 words
The method as defined in claim 35, wherein said composition further includes a buffer for holding said composition at a pH between 6 and 8.5, and a compatible reductant effective for preventing the conversion of
Claim 42
Independent Claim
34 words
A method of absorbing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition including red blood ghosts and the intracellular material of red blood
Claim 43
Independent Claim
34 words
A method of absorbing CO from a gas stream, comprising the step of passing said gas stream through a container containing a composition including red blood ghosts and the intracellular material of red blood
Claim 44
Dependent Claim
35 words
The method as defined in claim 37, wherein said composition further includes a buffer for holding said composition at a pH between 6 and 8.5, and a compatible reductant effective for preventing the conversion of
Claim 45
Dependent Claim
47 words
Apparatus for detection of CO in an oxygen-containing gas comprising means for drawing a sample of said gas in sequence through a container containing a blood-derived factor effective for converting CO to CO 2 and through means for detecting CO 2 in the gas sample leaving said
Claim 46
Dependent Claim
47 words
Apparatus for detection of CO in an oxygen-containing gas comprising means for drawing a sample of said gas in sequence through a container containing a blood-derived factor effective for converting CO to CO 2 and through means for detecting CO 2 in the gas sample leaving said
Claim 47
Dependent Claim
25 words
The apparatus as defined in claim 39, further comprising a CO 2 absorber disposed for removing any CO 2 from said gas prior to entry
Claim 48
Independent Claim
42 words
A method of detecting CO in an oxygen-containing gas, comprising the step of drawing a CO 2 -free sample of said gas through a container containing a blood-derived factor effective for converting CO to CO 2 and determining the CO 2 produced.
Claim 49
Independent Claim
42 words
A method of detecting CO in an oxygen-containing gas, comprising the step of drawing a CO 2 -free sample of said gas through a container containing a blood-derived factor effective for converting CO to CO 2 and determining the CO 2 produced.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |