Patent US3721976A successfully refreshed from Google Patents.
Patent US1312424A successfully refreshed from Google Patents.
Patent US5147968A successfully refreshed from Google Patents.
US5147968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic radiation absorbers and modulators comprising polyaniline
Assignee: Ohio State University Research Foundation
•
Filing: 1991-09-23
•
Granted: 1992-09-15
•
Expires: 2011-09-23
Abstract
Abstract A composition for absorbing electromagnetic radiation (such as microwave, infrared, visible light radiation ultraviolet radiation), wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero and R' and R 2 are independently selected from the group consisting of --H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O, --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C a alkyl, aryl or aralkyl group.
Inventors
- 👤 Arthur J. Epstein
- 👤 John M. Ginder
- 👤 Mitchell G. Roe
- 👤 Hamid Hajiseyedjavadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:45
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; D; D01; D01F; D01F6/00; D01F6/58; D01F6/76; D06; D06M; D06M10/00; D06M10/04; D06M10/08; D06M10/10; D06M15/00; D06M15/19; D06M15/37; D06M15/61; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR8## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group consisting of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O - , --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Claim 2
Dependent Claim
120 words
A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR8## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group consisting of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O - , --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Claim 3
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is microwave radiation which possesses a wavelength generally in the range of from about 0.04 cm to about 25 cm.
Claim 4
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is infrared radiation which possesses a wavelength generally in the range of from about 8,000 Angstroms to about 0.04 cm.
Claim 5
Dependent Claim
32 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is visible light radiation which possesses a wavelength generally in the range of from about 4,000 Angstroms to about 8,000 Angstroms.
Claim 6
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the electromagnetic radiation is ultraviolet radiation which possesses a wavelength generally in the range of from about 100 Angstroms to about 4,000 Angstroms.
References Cited (Backward Citations)
US3708289A
Cited
US4615829A
Cited
US4940640A
Cited
US4798685A
Cited
US4806271A
Cited
US4851487A
Cited
US5008041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |