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US3883303A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for controlling odors in recirculating toilets

Assignee: Inca-One Corp
•
Filing: 1972-06-15
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Granted: 1975-05-13
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Expires: 1992-06-15
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Abstract

Abstract A method for controlling odors as well as inhibiting the growth of microorganisms in recirculating toilets, septic tanks and holding tanks which contain water, organic waste material and microorganisms, by adding, to the water contained in the toilet, a composition containing borax and paraformaldehyde, the amount of paraformaldehyde added to the water being from 100 parts per million to 5,000 parts per million, by weight, based on the contents of the toilet. Preferably the amount of paraformaldehyde added is between 200 and 2,500 parts per million.

Inventors

  • 👤 George C Roberts

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 05:06
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/01; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/916

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 215 words
A METHOD FOR CONTROLLING ODORS AND INHIBITING GROWTH OF MICROORGANISMS IN RECIRCULATING TOILETS CONTAINING WATER, ORGANIC WASTE MATERIAL AND MICTOORGANISMS WHICH CONSISTS ESSENTIALLY IN: MIXING PARAFORMALDEHYDE WITH THE WATER CONTAINED IN SAID TIOLET, SAID WATER HAVING A TEMPERATURE OF BETWEEN 0*C AND 40*C AND CONTAINING BORAX TO ADJUST THE PH OF THE WATER AND PARAFORMALDEHYDE TO BETWEEN 5 AND 8, THE AMOUNT OF PARAFORMALDEHYDE BEING FROM 100 PART PER MILLION OF 5,000 PARTS PER MILLION, BY WEIGHT, BASED UPON THE CONTENTS OF THE TOILET SO THAT SUFFICIENT PARAFORMALDEHYDE DISSOLVES IN SAID WATER AND SLOWLY RELEASES FORMALDEHYDE TO FORM A SOLUTION AND TO REACT WITH ANY MERCAPTANS, BIOORGANICS AND OTHER COMPONENTS OF HUMAN WASTE CONTAINED IN THE TOILET AND TO INHIBIT THE GROWTH OF MICROORGANISMS WITHOUT KILLING SAID MICROORGANISMS AND THUS NOT INTERFERING WITH SUBSEQUENT BIOLOGICAL DECOMPOSITION ON LATER DUMPING OF THE CONTENTS OF THE RECIRCULATING TIOLET, SAID COMPONENT OF HUMAN WASTE TENDING TO LOWER THE PH OF THE SOLUTION TO THE ACIDIC SIDE THUS INCREASING THE SOLUBILITY OF THE PARAFORMALDEHYDE AND THEREBY PROVIDING MORE FORMALDEHYDE IN SOLUTION FOR REACTION WITH ADDITIONAL COMPONENTS OF HUMAN WASTE WHILE SAID BORAX, WITHOUT REACTING WITH SAID FORMALDEHYDE IN SOLUTION IS TENDING TO RAISE SAID PH ABOVE ABOUT 5 TO CONTROL AND MAINTAIN THE DESIRED CONCENTRATION OF FORMALDEHYDE IN SOLUTION.
Claim 2
Independent Claim 215 words
A METHOD FOR CONTROLLING ODORS AND INHIBITING GROWTH OF MICROORGANISMS IN RECIRCULATING TOILETS CONTAINING WATER, ORGANIC WASTE MATERIAL AND MICTOORGANISMS WHICH CONSISTS ESSENTIALLY IN: MIXING PARAFORMALDEHYDE WITH THE WATER CONTAINED IN SAID TIOLET, SAID WATER HAVING A TEMPERATURE OF BETWEEN 0*C AND 40*C AND CONTAINING BORAX TO ADJUST THE PH OF THE WATER AND PARAFORMALDEHYDE TO BETWEEN 5 AND 8, THE AMOUNT OF PARAFORMALDEHYDE BEING FROM 100 PART PER MILLION OF 5,000 PARTS PER MILLION, BY WEIGHT, BASED UPON THE CONTENTS OF THE TOILET SO THAT SUFFICIENT PARAFORMALDEHYDE DISSOLVES IN SAID WATER AND SLOWLY RELEASES FORMALDEHYDE TO FORM A SOLUTION AND TO REACT WITH ANY MERCAPTANS, BIOORGANICS AND OTHER COMPONENTS OF HUMAN WASTE CONTAINED IN THE TOILET AND TO INHIBIT THE GROWTH OF MICROORGANISMS WITHOUT KILLING SAID MICROORGANISMS AND THUS NOT INTERFERING WITH SUBSEQUENT BIOLOGICAL DECOMPOSITION ON LATER DUMPING OF THE CONTENTS OF THE RECIRCULATING TIOLET, SAID COMPONENT OF HUMAN WASTE TENDING TO LOWER THE PH OF THE SOLUTION TO THE ACIDIC SIDE THUS INCREASING THE SOLUBILITY OF THE PARAFORMALDEHYDE AND THEREBY PROVIDING MORE FORMALDEHYDE IN SOLUTION FOR REACTION WITH ADDITIONAL COMPONENTS OF HUMAN WASTE WHILE SAID BORAX, WITHOUT REACTING WITH SAID FORMALDEHYDE IN SOLUTION IS TENDING TO RAISE SAID PH ABOVE ABOUT 5 TO CONTROL AND MAINTAIN THE DESIRED CONCENTRATION OF FORMALDEHYDE IN SOLUTION.
Claim 3
Dependent Claim 25 words
A method according to claim 1 wherein the amount of paraformaldehyde dissolved in said water is from 200 to 2,500 parts per million, by weight.

References Cited (Backward Citations)

US1027000A Cited
US1083561A Cited
US1408535A Cited
US2525783A Cited
US3107216A Cited
US3183525A Cited
US3653499A Cited
US3785971A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-05-12 1978-11-11 1979-05-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-05-12 1982-11-11 1983-05-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-05-12 1986-11-11 1987-05-13 $7700.00 Window Closed / Lapsed

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