US3867288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating cutting and cooling oils
Assignee: Individual
•
Filing: 1972-08-21
•
Granted: 1975-02-18
•
Expires: 1992-08-21
Abstract
Abstract A process for treating a contaminated water and soluble oil mixture used as a cutting and cooling aid in manufacturing operations by contacting the contaminated mixture with ozone to oxidize and destroy bacteria in the mixture. Preferably, the contaminated mixture is contacted with ozone more than once per day when the mixture is used in industrial manufacturing operations substantially continuously throughout the day.
Inventors
- 👤 Richard J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:33
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/78
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
57 words
A PROCESS FOR RETARDING THE GROWTH OF BACTERIA IN A MIXTURE OF WATER AND SOLUBLE OIL USED IN INDUSTRIAL OPERATIONS AS A COOLANT AND/OR LUBRICANT FOR WORKPIECES COMPRISING REPEATEDLY CIRCULATING THE MIXTURE OVER THE WORKPIECES AND REPEATEDLY CONTACTING THE MIXTURE WITH SUFFICIENT OZONE TO MAINTAIN THE BACTERIA LEVEL IN THE MIXTURE BELOW A PREDETERMINED MAXIMUM BACTERIA LEVEL.
Claim 2
Dependent Claim
57 words
A PROCESS FOR RETARDING THE GROWTH OF BACTERIA IN A MIXTURE OF WATER AND SOLUBLE OIL USED IN INDUSTRIAL OPERATIONS AS A COOLANT AND/OR LUBRICANT FOR WORKPIECES COMPRISING REPEATEDLY CIRCULATING THE MIXTURE OVER THE WORKPIECES AND REPEATEDLY CONTACTING THE MIXTURE WITH SUFFICIENT OZONE TO MAINTAIN THE BACTERIA LEVEL IN THE MIXTURE BELOW A PREDETERMINED MAXIMUM BACTERIA LEVEL.
Claim 3
Dependent Claim
19 words
The process of claim 1 comprising the step of contacting the mixture with ozone more than once per day.
Claim 4
Dependent Claim
31 words
The process of claim 2 which also comprises the step of monitoring the bacteria level of the mixture to determine if the bacteria level has exceeded the predetermined maximum bacteria level.
Claim 5
Dependent Claim
47 words
The process of claim 3 which also comprises the step of adjusting the rate of contacting the mixture with ozone in the range of from more than one to twenty times per day to maintain the bacteria level of the mixture below the predetermined maximum bacteria level.
Claim 6
Dependent Claim
68 words
The process of claim 3 which also comprises the steps of adjusting the amount of ozone to contact the mixture to within the range of 1 to 20 parts per million and of adjusting the rate of contacting the mixture with ozone in the range of more than one to 20 times per day to maintain the bacteria level of the mixture below the predetermined maximum bacteria level.
Claim 7
Dependent Claim
24 words
The process of claim 2 wherein the mixture is contacted with ozone at the rate of at least 1 part per million by weight.
Claim 8
Dependent Claim
25 words
The process of claim 2 wherein the mixture is contacted with ozone at the rate of at least 1 1/2 parts per million by weight.
Claim 9
Dependent Claim
24 words
The process of claim 2 wherein the mixture is contacted with ozone at the rate of 1 to 20 parts per million by weight.
Claim 10
Dependent Claim
25 words
The process of claim 2 wherein the mixture is contacted with ozone at the rate of 1 1/2 to 10 parts per million by weight.
Claim 11
Dependent Claim
31 words
The process of claim 1 which also comprises the step of monitoring the bacteria level of the mixture to determine if the bacteria level has exceeded the predetermined maximum bacteria level.
Claim 12
Dependent Claim
47 words
The process of claim 10 which also comprises the step of adjusting the amount of ozone to contact the mixture to within the range of 1 to 20 parts per million by weight to maintain the bacteria level of the mixture below the predetermined maximum bacteria level.
Claim 13
Dependent Claim
24 words
The process of claim 1 wherein the mixture is contacted with ozone at the rate of at least 1 part per million by weight.
Claim 14
Dependent Claim
25 words
The process of claim 1 wherein the mixture is contacted with ozone at the rate of at lest 1 1/2 parts per million by weight.
Claim 15
Dependent Claim
24 words
The process of claim 1 wherein the mixture is contaCted with ozone at the rate of at least 3 parts per million by weight.
Claim 16
Dependent Claim
24 words
The process of claim 1 wherein the mixture is contacted with ozone at the rate of 1 to 20 parts per million by weight.
Claim 17
Dependent Claim
25 words
The process of claim 1 wherein the mixture is contacted with ozone at the rate of 1 1/2 to 10 parts per million by weight.
Claim 18
Dependent Claim
18 words
The process of claim 1 comprising contacting the mixture with ozone from 1 to 20 times per day.
Claim 19
Dependent Claim
18 words
The process of claim 1 comprising contacting the mixture with ozone from 2 to 10 times per day.
Claim 20
Dependent Claim
18 words
The process of claim 1 comprising contacting the mixture with ozone from 5 to 6 times per day.
Claim 21
Dependent Claim
30 words
The process of claim 1 comprising contacting the mixture with ozone from 1 to 20 times per day at a rate of at least 1 part per million by weight.
Claim 22
Dependent Claim
30 words
The process of claim 1 comprising contacting the mixture with ozone from 2 to 10 times per day at a rate of at least 1 part per million by weight.
Claim 23
Dependent Claim
31 words
The process of claim 1 comprising contacting the mixture with ozone from 1 to 20 times per day at a rate of 1 1/2 to 10 parts per million by weight.
Claim 24
Dependent Claim
32 words
The process of claim 1 comprising contacting the mixture with ozone from 2 to 10 times per day and at a rate of 1 1/2 to 10 parts per million by weight.
Claim 25
Dependent Claim
31 words
The process of claim 1 comprising contacting the mixture with ozone from 5 to 6 times per day and at a rate of 3 to 4 parts per million by weight.
References Cited (Backward Citations)
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |