| Data | Ora | Fonte | Titolo | Simbolo | Compagnia |
| 14/07/2009 | 17:03 | Edgar (US Regulatory) | Statement of Ownership (SC 13G) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 18/05/2009 | 12:02 | Edgar (US Regulatory) | Termination of Registration of a Class of Security under Section 12(g) (15-12G) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 11/05/2009 | 20:50 | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 07/05/2009 | 22:39 | Edgar (US Regulatory) | Current report filing (8-K) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 30/04/2009 | 22:06 | Edgar (US Regulatory) | Information Statement - All Other (definitive) (DEF 14C) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 08/04/2009 | 22:30 | Edgar (US Regulatory) | Statement of Beneficial Ownership (SC 13D) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 31/03/2009 | 18:56 | Edgar (US Regulatory) | Annual Report (10-K) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 17/02/2009 | 16:48 | Edgar (US Regulatory) | Amended Statement of Beneficial Ownership (SC 13D/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 16/01/2009 | 17:22 | Edgar (US Regulatory) | Initial Statement of Beneficial Ownership (3) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 12/01/2009 | 20:49 | Edgar (US Regulatory) | Amended Statement of Changes in Beneficial Ownership (4/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 01/12/2008 | 18:35 | Edgar (US Regulatory) | Amended Current report filing (8-K/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 14/11/2008 | 21:23 | Edgar (US Regulatory) | Quarterly Report (10-Q) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 11/09/2008 | 17:58 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Current report filing (8-K) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 18/08/2008 | 22:29 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Prospectus filed pursuant to Rule 424(b)(3) (424B3) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 14/08/2008 | 20:20 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Quarterly Report (10-Q) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 06/08/2008 | 12:00 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Notice of Effectiveness (EFFECT) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 28/07/2008 | 12:01 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Securities Registration Statement (S-1/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 23/07/2008 | 12:02 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Amended Annual Report (Small Business Issuers) (10KSB/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 23/07/2008 | 12:02 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Amended Quarterly Report (10-Q/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 19/05/2008 | 23:10 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Amended Quarterly Report of Financial Condition (10QSB/A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 15/05/2008 | 16:36 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Notification that Quarterly Report will be submitted late (NT 10-Q) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 29/04/2008 | 21:31 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Proxy Statement (definitive) (DEF 14A) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 15/04/2008 | 22:00 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Annual Report (Small Business Issuers) (10KSB) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 31/03/2008 | 17:44 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Notification that Annual Report will be submitted late (NT 10-K) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |
| 13/02/2008 | 23:26 | Edgar (US Regulatory) | Hydrogen Engine Center, Inc. - Annual Statement of Changes in Beneficial Ownership (5) | USOTC:HYEG | Hydrogen Engine Center Inc (CE) |