US4801451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning with enzymes from krill
Assignee: MEDISAN PHARMACEUTICALS AB
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Filing: 1987-08-06
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Granted: 1989-01-31
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Expires: 2007-08-06
Abstract
Abstract Enzymes from animals belonging to the order Euphausiaaceae are used for cleaning. Preferably, an enzyme mixture containing exo-and endopeptidases from krill are used. Living tissue can be cleaned or debrided with the enzyme mixture, isolation of the enzymes may be carried out by homogenizing krill and extracting with an aqueous medium. Further purification can be by gel chromatography. Enzymes from which lipids have been extracted may be lyophilized for long time storage.
Inventors
- 👤 Lars G. I. Hellgren
- 👤 Viggo Mohr
- 👤 Jan G. Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6402; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
In a process for the enzymatic debridement of living tissues by the application of an enzyme to the tissues being bebrided; wherein the improvement comprises the application of an enzymatic debriding effective amount of purified enzymes comprising a mixture of exo- and endopeptidases isolated from krill of the order Euphausiaceae.
Claim 2
Dependent Claim
50 words
In a process for the enzymatic debridement of living tissues by the application of an enzyme to the tissues being bebrided; wherein the improvement comprises the application of an enzymatic debriding effective amount of purified enzymes comprising a mixture of exo- and endopeptidases isolated from krill of the order Euphausiaceae.
Claim 3
Dependent Claim
24 words
A process according to claim 1 in which the enzymes isolated from krill of the order Euphausiaceae have molecular weights range of 15,000-80,000 dalton.
Claim 4
Dependent Claim
32 words
A process according to claim 1 in which the enzymes are isolated by a process which comprises homogenizing the krill and extracting the enzymes from the homogenized krill with an aqueous media.
Claim 5
Dependent Claim
49 words
In a process for the therapeutical cleaning of living tissue by the application of enzymes to the tissue be cleaned; wherein the improvement comprises the application of a therapeutically cleaning effective amount of purified enzymes comprising a mixture of exo- and endopeptidases isolated from krill of the order Euphausiaceae.
Claim 6
Dependent Claim
49 words
In a process for the therapeutical cleaning of living tissue by the application of enzymes to the tissue be cleaned; wherein the improvement comprises the application of a therapeutically cleaning effective amount of purified enzymes comprising a mixture of exo- and endopeptidases isolated from krill of the order Euphausiaceae.
Claim 7
Dependent Claim
26 words
A process according to claim 4 in which the enzymes isolated from krill of the order Euphausiaceae have molecular weights in the range of 15,000-80,000 dalton.
Claim 8
Dependent Claim
32 words
A process according to claim 4 in which the enzymes are isolated by a process which comprises homogenizing the krill and extracting the enzymes from the homogenized krill with an aqueous media.
References Cited (Backward Citations)
GB1273545A
Cited
US4307081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |