US3881295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposal system
Assignee: Dow Chemical Co
•
Filing: 1973-04-20
•
Granted: 1975-05-06
•
Expires: 1993-04-20
Abstract
Abstract Hazardous materials such as askarels, chlorinated hydrocarbons or other ecologically undesirable liquids are disposed of by gelling the liquid within a combustible package and subsequently shipping the package to a qualified disposal site, such as an incinerator, which can incinerate halogenated hydrocarbons in an ecologically sound manner.
Inventors
- 👤 Robert L Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:13
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A METHOD FOR THE DISPOSITION OF ECOLOGICALLY UNDESIRABLE POLYMER SWELLING LIQUID, THE STEPS OF THE METHOD COMPRISING CONTAINING THE LIQUID WITHIN PARTICLES OF A LIQUID SWELLABLE SOLID CROSS-LINKED VINYL ADDITION RESINOUS POLYMER HAVING A SWELLING INDEX OF FROM ABOUT 2 TO 50, THE LIQUIE BEING PRESENT IN A QUANTITY AT LEAST SUFFICIENT TO FORM A GEL, SAID SWELLABLE RESINOUS PARTICLES BEING LOCATED WITHIN A CONTAINER, CONTAINING SAID GEL IN A SHIPPING CONTAINER, AND TRANSFERRING SAID SHIPPING CONTAINER TO A DISPOSAL SITE.
Claim 2
Independent Claim
81 words
A METHOD FOR THE DISPOSITION OF ECOLOGICALLY UNDESIRABLE POLYMER SWELLING LIQUID, THE STEPS OF THE METHOD COMPRISING CONTAINING THE LIQUID WITHIN PARTICLES OF A LIQUID SWELLABLE SOLID CROSS-LINKED VINYL ADDITION RESINOUS POLYMER HAVING A SWELLING INDEX OF FROM ABOUT 2 TO 50, THE LIQUIE BEING PRESENT IN A QUANTITY AT LEAST SUFFICIENT TO FORM A GEL, SAID SWELLABLE RESINOUS PARTICLES BEING LOCATED WITHIN A CONTAINER, CONTAINING SAID GEL IN A SHIPPING CONTAINER, AND TRANSFERRING SAID SHIPPING CONTAINER TO A DISPOSAL SITE.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the undesirable polymer swelling liquid is an askarel.
Claim 4
Dependent Claim
15 words
The method of claim 2 wherein the particulate swellable resinous polymer is a styrene polymer.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein the shipping container has a plastic layer adjacent the gel.
Claim 6
Dependent Claim
14 words
The method of claim 4 wherein a corrugated paperboard container surrounds the plastic container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |