Patent US5066405A successfully refreshed from Google Patents.
US5066405A
Expired / Lapsed
US
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Method for absorbing petroleum based products
Assignee: Individual
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Filing: 1990-03-23
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Granted: 1991-11-19
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Expires: 2010-03-23
Abstract
Abstract A method for absorbing oils and petroleum based products, having a buoyant, anti-static foam pad impregnated with a hydrophobic amorphous silicate.
Inventors
- 👤 Jack L. Liston
- 👤 Michael Pipella
- 👤 Pete Bathemes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:15
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28042; B01J20/28045; B01J20/28033; B01J20/2805; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; C09; C09K; C09K3/00; C09K3/32; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A method for absorbing oils and petroleum-based products from a body of water, said method comprising the steps of: selecting a liquid anti-static polyurethane foam material; allowing said liquid foam material to rise; sprinkling a hydrophobic amorphous silicate powder over said liquid foam as it rises; allowing said liquid foam material to harden; placing the hardened foam material in said body of water in contact with said oils and petroleum-based products; and allowing said foam material to absorb said oils and petroleum-based products.
Claim 2
Independent Claim
83 words
A method for absorbing oils and petroleum-based products from a body of water, said method comprising the steps of: selecting a liquid anti-static polyurethane foam material; allowing said liquid foam material to rise; sprinkling a hydrophobic amorphous silicate powder over said liquid foam as it rises; allowing said liquid foam material to harden; placing the hardened foam material in said body of water in contact with said oils and petroleum-based products; and allowing said foam material to absorb said oils and petroleum-based products.
Claim 3
Independent Claim
95 words
A method for absorbing oils and petroleum-based products from a body of water, said method comprising the steps of: selecting a liquid anti-static polyurethane foam material; allowing said liquid foam material to rise; allowing said liquid from material to harden in the form of a pad; tumbling said pad in a container holding a hydrophobic amorphous silicate powder to allow said powder to coat and invade said pad; placing said pad in said body of water in contact with said oils and petroleum-based products; and allowing said pad to absorb said oils and petroleum-based products.
Claim 4
Independent Claim
95 words
A method for absorbing oils and petroleum-based products from a body of water, said method comprising the steps of: selecting a liquid anti-static polyurethane foam material; allowing said liquid foam material to rise; allowing said liquid from material to harden in the form of a pad; tumbling said pad in a container holding a hydrophobic amorphous silicate powder to allow said powder to coat and invade said pad; placing said pad in said body of water in contact with said oils and petroleum-based products; and allowing said pad to absorb said oils and petroleum-based products.
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) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |