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US4452894A Expired / Lapsed US ⏱️ 0.0 years remaining

Pseudomonas compositions

Assignee: Microlife Genetics Inc
•
Filing: 1981-10-09
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Granted: 1984-06-05
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Expires: 2001-10-09
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Abstract

Abstract Compositions of selected strains of Pseudomonas bacteria having the ability to utilize halogenated aromatic compounds as a sole carbon source are described. The bacteria are isolated from environments where they have been in long association with halogenated aromatic compounds, usually analagous compounds. First L-tryptophan and then a halogenated aromatic hydrocarbon are used as sole carbon sources for isolating and testing the selected strains. The isolated Pseudomonas strains are Pseudomonas putida; Pseudomonas sp. NRRL-B-12,538 or NRRL-B-12,539 or transfer derivatives thereof and are useful for degrading halogenated aromatic pollutants, particularly mono- and di-chloroaromatics.

Inventors

  • 👤 Ronald H. Olsen
  • 👤 Peter A. Vandenbergh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 10:24
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/34; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12N1/26; C12N15/00; C12N15/09; C12N15/11; C12N15/52; C12N15/63; C12N15/74; C12N15/78; C12R; C12R2001/00; C12R2001/01; C12R2001/38; C12R2001/385; C12R2001/40; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908; Y10S210/909; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/874; Y10S435/875; Y10S435/877

Claims Analysis

Total Claims: 26
Claim 1
Independent Claim 151 words
A biologically pure culture of a bacterium of the genus Pseudomonas in a containing genetic material which promotes utilization of a wide variety of halogenated hydrocarbons as sole carbon sources and wherein the strain grows faster in the presence of o-, m- or p-chlorotoluene than toluene as a sole carbon source, the genetic material being isolatable from a strain of Pseudomonas putida or Pseudomonas sp. NRRL-B-12,538 or NRRL-B-12,539 in contact for extended periods of time with halogenated aromatic compounds first by growth in a minimal medium including L-tryptophan as a sole carbon source and then growth in a second minimal medium in the presence of a halogenated aromatic compound as a second sole carbon source and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 2
Dependent Claim 151 words
A biologically pure culture of a bacterium of the genus Pseudomonas in a containing genetic material which promotes utilization of a wide variety of halogenated hydrocarbons as sole carbon sources and wherein the strain grows faster in the presence of o-, m- or p-chlorotoluene than toluene as a sole carbon source, the genetic material being isolatable from a strain of Pseudomonas putida or Pseudomonas sp. NRRL-B-12,538 or NRRL-B-12,539 in contact for extended periods of time with halogenated aromatic compounds first by growth in a minimal medium including L-tryptophan as a sole carbon source and then growth in a second minimal medium in the presence of a halogenated aromatic compound as a second sole carbon source and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 3
Dependent Claim 16 words
The bacterium of claim 1 wherein the genetic material is a plasmid in Pseudomonas putida NRRL-B-12,537.
Claim 4
Dependent Claim 14 words
The bacterium of claim 1 wherein the genetic material is in Pseudomonas sp. NRRL-B-12,538.
Claim 5
Dependent Claim 14 words
The bacterium of claim 1 wherein the genetic material is in Pseudomonas sp. NRRL-B-12,539.
Claim 6
Dependent Claim 14 words
The bacterium of claim 1 wherein the genetic material is in Pseudomonas aeruginosa NRRL-B-12,536.
Claim 7
Dependent Claim 165 words
A biologically pure culture of a bacterium of the genus Pseudomonas in a having genetic material from Pseudomonas putida isolated by the method of: (a) providing a sample from an environment which contains halogenated aromatic compounds which have been in contact with bacteria of the genus Pseudomonas including Pseudomonas putida for extended periods of time; (b) isolating the Pseudomonas from the sample in a minimal medium containing L-tryptophan as the sole carbon source along with a nitrogen source and essential minerals; and (c) re-isolating the L-tryptophan isolated strains of the Pseudomonas in the confined space on a minimal medium containing as a sole carbon source a halogenated aromatic compound wherein the bacterium grows faster in the presence of o, p, or m-chlorotoluene than toluene as a sole carbon source and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 8
Dependent Claim 165 words
A biologically pure culture of a bacterium of the genus Pseudomonas in a having genetic material from Pseudomonas putida isolated by the method of: (a) providing a sample from an environment which contains halogenated aromatic compounds which have been in contact with bacteria of the genus Pseudomonas including Pseudomonas putida for extended periods of time; (b) isolating the Pseudomonas from the sample in a minimal medium containing L-tryptophan as the sole carbon source along with a nitrogen source and essential minerals; and (c) re-isolating the L-tryptophan isolated strains of the Pseudomonas in the confined space on a minimal medium containing as a sole carbon source a halogenated aromatic compound wherein the bacterium grows faster in the presence of o, p, or m-chlorotoluene than toluene as a sole carbon source and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 9
Dependent Claim 25 words
The bacterium of claim 6 wherein the confined space in which the Pseudomonas putida is isolated is saturated with vapors of the halogenated aromatic compound.
Claim 10
Dependent Claim 18 words
The bacterium of claim 6 wherein in the preparation the environment is a soil containing halogenated aromatic compounds.
Claim 11
Dependent Claim 28 words
The bacterium of claim 6 wherein the environment from which the Pseudomonas putida is isolated is a halogenated hydrocarbon lubricant impregnated soil adjacent to operating oil pumping mchinery.
Claim 12
Dependent Claim 18 words
The bacterium of claim 6 wherein the halogenated aromatic compound is a m-, o- or p-chlorotoluene or dichlorotoluene
Claim 13
Dependent Claim 18 words
The bacterium of claim 6 wherein the contains a plasmid which encodes for o, m or p-chlorotoluene utilization.
Claim 14
Dependent Claim 11 words
The bacterium of claim 11 wherein the Pseudomonas is Pseudomonas putida.
Claim 15
Dependent Claim 26 words
The bacterium of claim 6 wherein Pseudomonas is Pseudomonas aeruginosa containing a plasmid which encodes for o, m or p-chlorotoluene utilization transferred from the Pseudomonas putida.
Claim 16
Dependent Claim 11 words
The method of claim 13 wherein the transfer is by transformation.
Claim 17
Dependent Claim 113 words
A biologically pure culture of a bacterium of the genus Pseudomonas containing genetic material which encodes for halogenated aromatic compound degradation and in particular grows faster in the presence of o-, m- or p-chlorotoluene than toluene as a sole carbon source and which is derived from a Pseudomonas isolated from soil, wherein the isolated Pseudomonas has been in contact with a halogenated hydrocarbon lubricant in the soil for extended periods of time adjacent to an oil well and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 18
Dependent Claim 113 words
A biologically pure culture of a bacterium of the genus Pseudomonas containing genetic material which encodes for halogenated aromatic compound degradation and in particular grows faster in the presence of o-, m- or p-chlorotoluene than toluene as a sole carbon source and which is derived from a Pseudomonas isolated from soil, wherein the isolated Pseudomonas has been in contact with a halogenated hydrocarbon lubricant in the soil for extended periods of time adjacent to an oil well and wherein growth of the bacterium is determined using a minimal medium agar plate in the presence of vapors of toluene or o-, m- or p-chlorotoluene as a sole carbon source at 25° to 30° C.
Claim 19
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas putida NRRL-B-12,536.
Claim 20
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas putida NRRL-B-12,536.
Claim 21
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas sp. NRRL-B-12,538.
Claim 22
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas sp. NRRL-B-12,538.
Claim 23
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas sp. NRRL-B-12,539.
Claim 24
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas sp. NRRL-B-12,539.
Claim 25
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas aeruginosa NRRL-B-12,536.
Claim 26
Dependent Claim 12 words
A biologically pure culture of a bacterium which is Pseudomonas aeruginosa NRRL-B-12,536.

References Cited (Backward Citations)

US3808101A Cited
US4259444A Cited
US3849251A Cited
US3923603A Cited
SU647339A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-06-05 1987-12-05 1988-06-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-06-05 1991-12-05 1992-06-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-06-05 1995-12-05 1996-06-05 $7700.00 Window Closed / Lapsed

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