US3720216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing the dynamic drag of a turbulent aqueous stream
Assignee: Union Carbide Corp
•
Filing: 1971-09-27
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Granted: 1973-03-13
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Expires: 1991-09-27
Abstract
Abstract A method for reducing the dynamic drag of a turbulent aqueous stream which comprises contacting said aqueous stream with a solid mass of finely divided material containing an ethylene oxide polymer and a water-soluble organic or inorganic material.
Inventors
- 👤 L Wartman
- 👤 P King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
C; C09; C09K; C09K3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
48 words
A method for reducing the dynamic drag of a turbulent aqueous stream which comprises contacting said aqueous stream with a solid mass of finely divided material containing an ethylene oxide polymer having an average molecular weight greater than 1 X 106 and a water-soluble organic or inorganic material.
Claim 2
Independent Claim
48 words
A method for reducing the dynamic drag of a turbulent aqueous stream which comprises contacting said aqueous stream with a solid mass of finely divided material containing an ethylene oxide polymer having an average molecular weight greater than 1 X 106 and a water-soluble organic or inorganic material.
Claim 3
Dependent Claim
44 words
A method according to claim 1 wherein said ethylene oxide polymer is present in said solid mass of material in an amount within the range of about 10 to about 90 percent by weight based on the weight of the solid mass of material.
Claim 4
Dependent Claim
44 words
A method according to claim 1 wherein said ethylene oxide polymer is present in said solid mass of material in an amount within the range of about 15 to about 60 percent by weight based on the weight of the solid mass of material.
Claim 5
Dependent Claim
14 words
A method according to claim 1 wherein said ethylene oxide polymer is poly(ethylene oxide).
Claim 6
Dependent Claim
21 words
A method according to claim 1 wherein said water-soluble material is an ethylene oxide polymer of less than 20,000 molecular weight.
Claim 7
Dependent Claim
13 words
A method according to claim 1 wherein said water-soluble material is potassium carbonate.
Claim 8
Dependent Claim
13 words
A method according to claim 1 wherein said water-soluble material is confectioners sugar.
Claim 9
Dependent Claim
17 words
A method according to claim 1 wherein said solid mass of finely divided material includes a binder.
Claim 10
Dependent Claim
11 words
A method according to claim 8 wherein said binder is starch.
Claim 11
Dependent Claim
20 words
A method according to claim 1 wherein said solid mass of finely divided material is in the form of tablets.
Claim 12
Independent Claim
58 words
A method for reducing the dynamic drag of a turbulent aqueous stream which comprises contacting said aqueous stream with a solid, inert mass of finely divided material containing poly(ethylene oxide) having an average molecular weight greater than 1 X 106, and a water-soluble organic or inorganic material having a greater rate of water solubility than said poly(ethylene oxide).
Claim 13
Independent Claim
58 words
A method for reducing the dynamic drag of a turbulent aqueous stream which comprises contacting said aqueous stream with a solid, inert mass of finely divided material containing poly(ethylene oxide) having an average molecular weight greater than 1 X 106, and a water-soluble organic or inorganic material having a greater rate of water solubility than said poly(ethylene oxide).
Claim 14
Dependent Claim
43 words
A method according to claim 11 wherein said poly(ethylene oxide) is present in said solid mass of material in an amount within the range of about 10 to about 90 percent by weight based on the weight of the solid mass of material.
Claim 15
Dependent Claim
43 words
A method according to claim 11, wherein said poly(ethylene oxide) is present in said solid mass of material in an amount within the range of about 15 to about 60 percent by weight based upon the weight of the solid mass of material.
Claim 16
Dependent Claim
21 words
A method according to claim 12 wherein said water-soluble material is an ethylene oxide polymer of less than 20,000 molecular weight.
Claim 17
Dependent Claim
12 words
A method according to claim 12 wherein said water-soluble material is starch.
References Cited (Backward Citations)
US3368004A
Cited
US3520313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |