US4790965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sensitizing compositions to radio frequency energy
Assignee: Phillips Petroleum Co
•
Filing: 1987-01-30
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Granted: 1988-12-13
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Expires: 2007-01-30
Abstract
Abstract A composition of enhanced radio frequency sensitivity and a method for providing enhanced radio frequency sensitivity to a composition in which a substance suitable for enhancement of radio frequency sensitivity is admixed with a radio frequency sensitizing amount of an inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles with the radio frequency sensitizer chosen from among zinc oxide (American Process), bentonite clay, and crystalline or amorphous alkali or alkaline earth metal aluminosilicate. A process for molding using these compositions and the molded product. The composition, method for enhancing radio frequency sensitivity, process for molding and molded product with a polymeric substance, particularly ultra high molecular weight polyethylene, as the substance suitable for enhancement of radio frequency sensitivity.
Inventors
- 👤 Agmund K. Thorsrud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:00
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/18; C08K3/20; C08K3/22; C08K3/346
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
60 words
A method for molding wherein a substance suitable for radio frequency enhancement is treated by the method comprising admixing with said substance suitable for radio frequency enhancement a radio frequency sensitizing amount of zinc oxide (American process) inorganic radio frequency sensitizer treated essentially to remove absorbed an/or other volatiles and then subjected to radio frequency energy in a molding process.
Claim 2
Independent Claim
60 words
A method for molding wherein a substance suitable for radio frequency enhancement is treated by the method comprising admixing with said substance suitable for radio frequency enhancement a radio frequency sensitizing amount of zinc oxide (American process) inorganic radio frequency sensitizer treated essentially to remove absorbed an/or other volatiles and then subjected to radio frequency energy in a molding process.
Claim 3
Dependent Claim
18 words
A method of claim 1 wherein said substance suitable for enhancement of radio frequency sensitivity is a polymer.
Claim 4
Dependent Claim
13 words
A method of claim 2 wherein said polymer is ultra-high molecular weight polyethylene.
Claim 5
Dependent Claim
12 words
A method of claim 3 wherein said sensitizer has been heat treated.
Claim 6
Dependent Claim
30 words
A method of claim 4 wherein said sensitizer is present in an amount in a range of about 1 weight percent to about 20 weight percent based on total composition.
Claim 7
Independent Claim
59 words
A method for molding wherein a substance suitable for radio frequency enhancement is treated by the method comprising admixing with said substance suitable for radio frequency enhancement a radio frequency sensitizing amount of bentonite clay inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles and then subjected to radio frequency energy in a molding process.
Claim 8
Independent Claim
59 words
A method for molding wherein a substance suitable for radio frequency enhancement is treated by the method comprising admixing with said substance suitable for radio frequency enhancement a radio frequency sensitizing amount of bentonite clay inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles and then subjected to radio frequency energy in a molding process.
Claim 9
Dependent Claim
18 words
A method of claim 6 wherein said substance suitable for enhancement of radio frequency sensitivity is a polymer.
Claim 10
Dependent Claim
13 words
A method of claim 7 wherein said polymer is ultra-high molecular weight polyethylene.
Claim 11
Dependent Claim
12 words
A method of claim 8 wherein said sensitizer has been heat treated.
Claim 12
Dependent Claim
30 words
A method of claim 9 wherein sid sensitizer is present in an amount in a range of about one weight percent to about twenty weight percent based on total composition.
Claim 13
Independent Claim
51 words
A method of molding wherein a composition comprising a substance suitable for enhancement of radio frequency sensitivity and a radio frequency sensitizing amount of zinc oxide (American process) inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles is subjected to radio frequency energy in a molding process.
Claim 14
Independent Claim
51 words
A method of molding wherein a composition comprising a substance suitable for enhancement of radio frequency sensitivity and a radio frequency sensitizing amount of zinc oxide (American process) inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles is subjected to radio frequency energy in a molding process.
Claim 15
Dependent Claim
18 words
A method of claim 11 wherein said substance suitable for enhancement of radio frequency sensitivity is a polymer.
Claim 16
Dependent Claim
13 words
A method of claim 12 wherein said polymer is ultra-high molecular weight polyethylene.
Claim 17
Dependent Claim
12 words
A method of claim 13 wherein said sensitizer has been heat treated.
Claim 18
Dependent Claim
30 words
A method of claim 14 wherein said sensitizer is admixed in an amount in a range of about 1 weight percent to about 20 weight percent based on total composition.
Claim 19
Independent Claim
49 words
A method for molding wherein a composition comprising a substance suitable for enhancement of radio frequency sensitivity and a radio frequency sensitizing amount of bentonite clay inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles is subjected to radio frequency energy in a molding process.
Claim 20
Independent Claim
49 words
A method for molding wherein a composition comprising a substance suitable for enhancement of radio frequency sensitivity and a radio frequency sensitizing amount of bentonite clay inorganic radio frequency sensitizer treated essentially to remove absorbed water and/or other volatiles is subjected to radio frequency energy in a molding process.
Claim 21
Dependent Claim
18 words
A method of claim 16 wherein said substance suitable for enhancement of radio frequency sensitivity is a polymer.
Claim 22
Dependent Claim
13 words
A method of claim 17 wherein said polymer is ultra-high molecular weight polyethylene.
Claim 23
Dependent Claim
12 words
A mmethod of claim 18 wherein said sensitizer has been heat treated.
Claim 24
Dependent Claim
30 words
A method of claim 19 wherein said sensitizer is admixed in an amount in a range of about 1 weight percent to about 20 weight percent based on total composition.
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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) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |