Patent US5360654A successfully refreshed from Google Patents.
US5360654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sorbent articles
Assignee: 3M Co
•
Filing: 1993-01-28
•
Granted: 1994-11-01
•
Expires: 2013-01-28
Abstract
Abstract A microfibrous sorbent article is provided. The microfibrous sorbent article comprises an elongate boom having a substantially oval cross-section. The boom is formed of multiple adjacent microfibers layers, the layers being bonded to each other by entanglement of fibers between adjacent layers. Also provided is a method for making the microfibrous sorbent article.
Inventors
- 👤 Philip A. Anderson
- 👤 Ronald R. Gorke
- 👤 Thomas I. Insley
- 👤 Daniel E. Meyer
- 👤 David A. Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:24
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28023; B01J20/28028; B01J20/28033; B01J20/28035; D04H1/40; D04H1/54; D04H1/56; D04H5/00; D04H5/06; C; C02; C02F; C02F1/00; C02F1/28; C02F1/42; C02F1/68; C02F1/681; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924; Y10S423/00; Y10S423/09; Y10S423/14; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/626; Y10T442/699
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
36 words
A microfibrous sorbent article comprising an elongate boom having a substantially oval cross-section, said boom being formed of multiple adjacent microfibers layers, said layers being bonded to each other by entanglement of fibers between adjacent layers.
Claim 2
Dependent Claim
36 words
A microfibrous sorbent article comprising an elongate boom having a substantially oval cross-section, said boom being formed of multiple adjacent microfibers layers, said layers being bonded to each other by entanglement of fibers between adjacent layers.
Claim 3
Dependent Claim
24 words
The article of claim 1 wherein said microfibers are polyolefin, polyester, polyamide, polyurethane, polystyrene-polybutadiene-polystyrene block copolymers, polyvinyl chloride, acrylic, acrylic copolymers, polystyrene or polysulphone.
Claim 4
Dependent Claim
10 words
The article of claim 1 further comprising sorbent particulate material.
Claim 5
Dependent Claim
34 words
The article of claim 3 wherein said sorbent particulate material is microfiber microwebs, wood pulp fibers, modified starches, diatomaceous earth, high-molecular weight acrylic polymers containing hydrophilic groups, alkylstyrene particles, activated carbon, or combinations thereof.
Claim 6
Dependent Claim
22 words
The article of claim 3 wherein said sorbent particulate material is present in an amount of about 0 to 90 weight percent.
Claim 7
Dependent Claim
21 words
The article of claim 3 wherein said sorbent particulate is present in the central 20 to 90 percent of the boom.
Claim 8
Dependent Claim
11 words
The article of claim 1 further containing neutralizing sorbent particulate material.
Claim 9
Dependent Claim
30 words
The article of claim 7 wherein said neutralizing sorbent particulate material is sodium bicarbonate, calcium hydroxide, borax, potassium dihydrogen phosphate, disodium hydrogen phosphate, potassium hydrogen phthalate or a combination thereof.
Claim 10
Dependent Claim
23 words
The article of claim 7 wherein said neutralizing sorbent particulate material is present in an amount of about 0 to 90 weight percent.
Claim 11
Dependent Claim
22 words
The article of claim 7 wherein said neutralizing sorbent particulate is present in the central 20 to 90 percent of the boom.
Claim 12
Dependent Claim
11 words
The article of claim 1 further comprising vapor suppression particulate material.
Claim 13
Dependent Claim
24 words
The article of claim 11 wherein said vapor suppression particulate material is activated carbon, alumina, sodium bicarbonate, silver, clay, hopcalite or a combination thereof.
Claim 14
Dependent Claim
23 words
The article of claim 11 wherein said vapor suppression particulate material is present in an amount of about 0 to 90 weight percent.
Claim 15
Dependent Claim
23 words
The article of claim 11 wherein said vapor suppression particulate material is present in the central 20 to 90 percent of the boom.
Claim 16
Dependent Claim
10 words
The article of claim 1 further comprising crimped bulking fibers.
Claim 17
Dependent Claim
16 words
The article of claim 15 wherein said crimped bulking fibers have about 1 to 10 crimps/cm.
Claim 18
Dependent Claim
19 words
The article of claim 15 wherein the size of the crimped bulking fibers is about 3 to 40 decitex.
Claim 19
Dependent Claim
19 words
The article of claim 15 wherein the length of the crimped bulking fibers is about 2 to 15 cm.
Claim 20
Dependent Claim
22 words
The article of claim 15 wherein said purifying sorbent particulate is present in the central 20 to 90 percent of the boom.
Claim 21
Dependent Claim
17 words
The article of claim 1 wherein said boom has a diameter of about 50 mm to 30.
Claim 22
Dependent Claim
18 words
The article of claim 1 wherein said boom has a lineal weight of about 20 to 600 g/m.
Claim 23
Dependent Claim
18 words
The article of claim 1 wherein said boom has an oil sorbency of at least about 5 g/g.
Claim 24
Dependent Claim
10 words
The article of claim 1 wherein the microfibers are oriented.
Claim 25
Independent Claim
71 words
A method of making a microfibrous sorbent elongate boom-shaped article comprising a) extruding molten thermoplastic fiber-forming polymer from multiple orifices in a fiber-forming die, said orifices being aligned along the face of the die; b) attenuating the fibers in a stream of hot air; c) collecting said fibers on a conveyor surface substantially parallel to said die face and moving transverse to said die face to form the microfibrous sorbent article.
Claim 26
Independent Claim
71 words
A method of making a microfibrous sorbent elongate boom-shaped article comprising a) extruding molten thermoplastic fiber-forming polymer from multiple orifices in a fiber-forming die, said orifices being aligned along the face of the die; b) attenuating the fibers in a stream of hot air; c) collecting said fibers on a conveyor surface substantially parallel to said die face and moving transverse to said die face to form the microfibrous sorbent article.
Claim 27
Dependent Claim
19 words
The method of claim 24 wherein said collector surface is angled no more than about 60° from the die.
Claim 28
Dependent Claim
13 words
The method of claim 24 wherein sorbent particulate is combined with said microfibers.
Claim 29
Dependent Claim
23 words
The method of claim 26 wherein said sorbent particulate is combined with said microfibers across only 20 to 90 percent of the die.
Claim 30
Dependent Claim
14 words
The method of claim 24 wherein neutralizing sorbent particulate is combined with said microfibers.
Claim 31
Dependent Claim
24 words
The method of claim 28 wherein said neutralizing sorbent particulate is combined with said microfibers across only 20 to 90 percent of the die.
Claim 32
Dependent Claim
13 words
The method of claim 24 wherein purifying particulate is combined with said microfibers.
Claim 33
Dependent Claim
23 words
The method of claim 30 wherein said purifying particulate is combined with said microfibers across only 20 to 90 percent of the die.
Claim 34
Dependent Claim
14 words
The method of claim 24 wherein bulking staple fibers are combined with said microfibers.
Claim 35
Dependent Claim
24 words
The method of claim 32 wherein said bulking staple fibers are combined with said microfibers across only 20 to 90 percent of the die.
Claim 36
Dependent Claim
16 words
The method of claim 24 further comprising the steps of orienting the fibers prior to collection.
Claim 37
Dependent Claim
17 words
The method of claim 24 further comprising the step of trimming the edges of the sorbent article.
References Cited (Backward Citations)
US3073735A
Cited
US3739913A
Cited
US4001067A
Cited
US3933557A
Cited
US3971373A
Cited
US4100324A
Cited
US3981100A
Cited
US4118531A
Cited
US4357379A
Cited
US4366067A
Cited
US4429001A
Cited
US4497712A
Cited
US4594202A
Cited
US4604313A
Cited
US4659478A
Cited
US4973503A
Cited
US4965129A
Cited
US4737394A
Cited
US4792399A
Cited
US4813948A
Cited
US4988560A
Cited
US4933299A
Cited
US4902544A
Cited
US5165821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |