Patent US3678140A successfully refreshed from Google Patents.
US3678140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for foaming aqueous protein-containing blasting agents
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
•
Filing: 1969-12-03
•
Granted: 1972-07-18
•
Expires: 1989-12-03
Abstract
Abstract Passing a thickened protein-containing water-bearing blasting agent through a plurality of orifices at a pressure of about 40 to 160 psi to create a vacuum in the area where the blasting agent exits from the orifice, incorporating air or other gas in the blasting agent and, thereafter, reducing the velocity of the blasting agent to provide a foamed product.
Inventors
- 👤 Philip E Adams
- 👤 Philip W Fearnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:56
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
10 words
A process of claim 1 where the gas is air.
Claim 2
Dependent Claim
17 words
A process of claim 2 wherein the water-bearing explosive contains an inorganic oxidizing salt and egg albumin.
Claim 3
Dependent Claim
18 words
A process of claim 3 whereiN the pressure is from about 125 to 140 pounds per square inch.
Claim 4
Dependent Claim
18 words
A process of claim 3 wherein the water-bearing explosive contains from about 0.1 to 10 percent thickening agent.
Claim 5
Dependent Claim
12 words
A process of claim 5 wherein the thickening agent is guar gum.
References Cited (Backward Citations)
US3400026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |