US4366067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removal and recovery of oil
Assignee: Individual
•
Filing: 1980-10-20
•
Granted: 1982-12-28
•
Expires: 2000-10-20
Abstract
Abstract Bags or booms of porous material filled with an oil adsorbant, particulate polyisocyanurate synthetic foam material are used to enclose and adsorb oil spilled on water or hard surfaces.
Inventors
- 👤 Gordon R. Golding
- 👤 Richard J. Boaggio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:38
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
Article for removing oil for surfaces comprising a bag or boom made of cloth or netting material, said material allowing the passage of oil therethrough, and filled with closed cell polyisocyanurate foam dust, said polyisocyanurate foam being formed from a polyol and a large molar excess of polymeric isocyanate so that trimerization to the isocyanurate ring structure takes place.
Claim 2
Dependent Claim
59 words
Article for removing oil for surfaces comprising a bag or boom made of cloth or netting material, said material allowing the passage of oil therethrough, and filled with closed cell polyisocyanurate foam dust, said polyisocyanurate foam being formed from a polyol and a large molar excess of polymeric isocyanate so that trimerization to the isocyanurate ring structure takes place.
Claim 3
Dependent Claim
19 words
The article of claim 1 wherein the bag or boom is made of muslin, cotton, cheesecloth or polyethylene netting.
Claim 4
Dependent Claim
21 words
The article of claim 1 wherein the dust is chopped polyisocyanurate having an average diameter of about 1 to 5 centimeters.
Claim 5
Dependent Claim
22 words
Article of claim 1 wherein the closed cell polyisocyanurate foam has a density of about 1.5 to 2.0 pounds per cubic foot.
Claim 6
Dependent Claim
23 words
Article of claim 1 wherein the bags or booms have eyes on their ends for chaining or roping to adjacent bags or booms.
Claim 7
Dependent Claim
53 words
Method of cleaning up oil spills comprising applying bags or booms containing polyisocyanurate foam dust to the spill and recovering the bags or booms after adsorbing oil, said polyisocyanurate foam being formed from a polyol and a large molar excess of polymeric isocyanate so that trimerization to the isocyanurate ring structure takes place.
Claim 8
Dependent Claim
53 words
Method of cleaning up oil spills comprising applying bags or booms containing polyisocyanurate foam dust to the spill and recovering the bags or booms after adsorbing oil, said polyisocyanurate foam being formed from a polyol and a large molar excess of polymeric isocyanate so that trimerization to the isocyanurate ring structure takes place.
Claim 9
Dependent Claim
19 words
Method of claim 6 wherein the bags or booms are squeezed to recover the oil which they had adsorbed.
Claim 10
Dependent Claim
21 words
Method of claim 6 wherein the booms or bags are chained or roped together prior to applying them to the spill.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |