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EP0676839
European procedure
Extract from the Register of European Patents
EP About this file: EP0676839
| EP0676839 - Unipolar semiconductor laser [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.05.2000 Database last updated on 12.12.2024 | Most recent event Tooltip | 12.05.2000 | No opposition filed within time limit | published on 28.06.2000 [2000/26] | Applicant(s) | For all designated states AT&T Corp. 32 Avenue of the Americas New York, NY 10013-2412 / US | [1995/41] | Inventor(s) | 01 /
Capasso, Federico 42 Westbrook Road Westfield, New Jersey 07090 / US | 02 /
Cho, Alfred Yi 11 Kenneth Court Summit, New Jersey 07901 / US | 03 /
Faist, Jerome 239 Country Club Lane Scotch Plains, New Jersey 07076 / US | 04 /
Hutchinson, Albert Lee 1359 River Road Piscataway, New Jersey 08854 / US | 05 /
Luryi, Serge 907 Papen Road Bridgewater, New Jersey 08807 / US | 06 /
Sirtori, Carlo 2 Hillside Avenue Summit, New Jersey 07901 / US | 07 /
Sivco, Deborah Lee Plainfield Avenue Warren, New Jersey 07059 / US | [1995/41] | Representative(s) | Watts, Christopher Malcolm Kelway Lucent Technologies (UK) Ltd, 5 Mornington Road Woodford Green Essex, IG8 0TU / GB | [N/P] |
| Former [1995/41] | Watts, Christopher Malcolm Kelway, Dr. AT&T (UK) Ltd. 5, Mornington Road Woodford Green Essex, IG8 0TU / GB | Application number, filing date | 95302112.8 | 29.03.1995 | [1995/41] | Priority number, date | US19940223341 | 04.04.1994 Original published format: US 223341 | US19950371000 | 09.01.1995 Original published format: US 371000 | [1995/41] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0676839 | Date: | 11.10.1995 | Language: | EN | [1995/41] | Type: | B1 Patent specification | No.: | EP0676839 | Date: | 07.07.1999 | Language: | EN | [1999/27] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 22.08.1995 | Classification | IPC: | H01S3/18, H01S3/19 | [1995/41] | CPC: |
B82Y20/00 (EP,US);
H01S5/3402 (EP,US);
H01S5/34 (EP,US);
H01S3/1068 (EP,US);
H01S5/0614 (EP,US);
H01S5/06243 (EP,US);
| Designated contracting states | DE, FR, GB [1995/41] | Title | German: | Unipolarer Halbleiterlaser | [1998/50] | English: | Unipolar semiconductor laser | [1995/41] | French: | Laser à semi-conducteur unipolaire | [1995/41] |
| Former [1995/41] | Monopolarer Halbleiterlaser | Examination procedure | 28.03.1996 | Examination requested [1996/22] | 22.01.1997 | Despatch of a communication from the examining division (Time limit: M04) | 27.05.1997 | Reply to a communication from the examining division | 22.01.1998 | Despatch of a communication from the examining division (Time limit: M04) | 22.05.1998 | Reply to a communication from the examining division | 18.12.1998 | Despatch of communication of intention to grant (Approval: Yes) | 25.01.1999 | Communication of intention to grant the patent | 24.03.1999 | Fee for grant paid | 24.03.1999 | Fee for publishing/printing paid | Opposition(s) | 08.04.2000 | No opposition filed within time limit [2000/26] | Fees paid | Renewal fee | 06.03.1997 | Renewal fee patent year 03 | 16.03.1998 | Renewal fee patent year 04 | 16.03.1999 | Renewal fee patent year 05 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | [A]FR2607978 (THOMSON CSF [FR]) [A] 1 * the whole document *; | [A]US5128728 (LIU HUI C [CA]) [A] 1 * the whole document *; | [DX] - KASTALSKY A ET AL, "POSSIBILITY OF INFRARED LASER IN A RESONANT TUNNELING STRUCTURE", APPLIED PHYSICS LETTERS, (19911118), vol. 59, no. 21, pages 2636 - 2638, XP000265170 [DX] 1-4,7,9 * the whole document * DOI: http://dx.doi.org/10.1063/1.105922 | [DX] - J. FAIST ET AL, "Mid-infrared field tunable intersubband electroluminescence at room temperature by photon assisted tunneling in coupled quantum wells", APPLIED PHYSICS LETTERS, NEW YORK US, (19940228), vol. 64, no. 9, pages 1144 - 1146, XP000425924 [DX] 1-6 * the whole document * DOI: http://dx.doi.org/10.1063/1.110833 | [DA] - Y.M. YEE ET AL, "carrier transport and intersubband population inversion in coupled quantum wells", APPLIED PHYSICS LETTERS, NEW YORK US, (19930823), vol. 63, no. 8, doi:doi:10.1063/1.109815, pages 1089 - 1091, XP000566592 [DA] 1 * the whole document * DOI: http://dx.doi.org/10.1063/1.109815 | [PX] - J. FAIST ET AL, "Quantum cascade laser. An intersuband semiconductor laser operating above liquid nitrogen temperature", ELECTRONICS LETTERS, STEVENAGE GB, (19940529), vol. 30, no. 111, pages 865 - 866, XP000465042 [PX] 1-6,9,10 * the whole document * DOI: http://dx.doi.org/10.1049/el:19940605 | [PX] - J. FAIST ET AL, "Vertical transition quantum cascade laser with Bragg confined excited state", APPLIED PHYSICS LETTERS, NEW YORK US, (19950130), vol. 66, no. 5, doi:doi:10.1063/1.114005, pages 538 - 540, XP000489798 [PX] 1-4,7-10 * the whole document * DOI: http://dx.doi.org/10.1063/1.114005 |