US4350709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous anti-microbial treatments of storage grain
Assignee: Arkema Inc
•
Filing: 1980-06-26
•
Granted: 1982-09-21
•
Expires: 2000-06-26
Abstract
Abstract Novel sequential gas treatments for preserving grain are disclosed. Sulfur dioxide gas which has been bubbled through an organic acid, such as propionic acid, is perfused through grain to be treated and permitted to react with that grain for a preselected period of time, to produce a preserved grain product. This grain product is then preferably perfused with ammonia gas. Alternatively, residual sulfur dioxide may be dispersed within the treated grain mass through the introduction of a carrier gas prior to ammonia gas perfusion. Other preservative methods and substances are also disclosed which provide superior preserved grain products.
Inventors
- 👤 Frederick D. Vidal
- 👤 Anantharaman Jayaraman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:23
CPC Classifications
A; A23; A23B; A23B9/00; A23B9/16; A23B9/24; A23B9/30; A23B9/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
A method of treating moist grain to produce a preserved grain end product comprising contacting said grain with effective amounts of sulfur dioxide and a lower aliphatic fatty acid vapor to produce a preserved grain product wherein the amount of said vapor is sufficient to enhance the antimicrobial actions of said sulfur dioxide.
Claim 2
Independent Claim
53 words
A method of treating moist grain to produce a preserved grain end product comprising contacting said grain with effective amounts of sulfur dioxide and a lower aliphatic fatty acid vapor to produce a preserved grain product wherein the amount of said vapor is sufficient to enhance the antimicrobial actions of said sulfur dioxide.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said vapor is a vapor of propionic acid.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said vapor is a vapor of acetic acid.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein said vapor is a vapor of formic acid.
Claim 6
Dependent Claim
18 words
The method of claim 1 wherein said vapor and said sulfur dioxide are simultaneously applied to said grain.
References Cited (Backward Citations)
US1222830A
Cited
US1524494A
Cited
US1777044A
Cited
US2132786A
Cited
US3404987A
Cited
US3608085A
Cited
US3928577A
Cited
US3962475A
Cited
US4083999A
Cited
US4208443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |