|
| US3945602 | 10 Sep 1974 | 23 Mar 1976 | Harsco Corporation | Gang tie holding bolt |
| US4405112 | 9 Apr 1982 | 20 Sep 1983 | Harsco Corporation | Gang form bolt |
| US4508310 | 20 Sep 1983 | 2 Apr 1985 | | Waler bracket |
| US5562845 | 27 Sep 1994 | 8 Oct 1996 | Symons Corporation | Concrete form and self-contained waler clamp assembly |
| US5636292 | 8 May 1995 | 3 Jun 1997 | Digimarc Corporation | Steganography methods employing embedded calibration data |
| US5745604 | 15 Mar 1996 | 28 Apr 1998 | Digimarc Corporation | Identification/authentication system using robust, distributed coding |
| US5748763 | 8 May 1995 | 5 May 1998 | Digimarc Corporation | Image steganography system featuring perceptually adaptive and globally scalable signal embedding |
| US5768426 | 21 Oct 1994 | 16 Jun 1998 | Digimarc Corporation | Graphics processing system employing embedded code signals |
| US5809160 | 12 Nov 1997 | 15 Sep 1998 | Digimarc Corporation | Method for encoding auxiliary data within a source signal |
| US5822436 | 25 Apr 1996 | 13 Oct 1998 | Digimarc Corporation | Photographic products and methods employing embedded information |
| US5832119 | 25 Sep 1995 | 3 Nov 1998 | Digimarc Corporation | Methods for controlling systems using control signals embedded in empirical data |
| US5850481 | 8 May 1995 | 15 Dec 1998 | Digimarc Corporation | Steganographic system |
| US5862260 | 16 May 1996 | 19 Jan 1999 | Digimarc Corporation | Methods for surveying dissemination of proprietary empirical data |
| US5968403 | 14 Nov 1997 | 19 Oct 1999 | | Waler system and clamp for concrete wall forms |
| US6026193 | 16 Oct 1997 | 15 Feb 2000 | Digimarc Corporation | Video steganography |
| US6111954 | 8 Oct 1998 | 29 Aug 2000 | Digimarc Corporation | Steganographic methods and media for photography |
| US6122392 | 12 Nov 1997 | 19 Sep 2000 | Digimarc Corporation | Signal processing to hide plural-bit information in image, video, and audio data |
| US6122403 | 12 Nov 1996 | 19 Sep 2000 | Digimarc Corporation | Computer system linked by using information in data objects |
| US6322047 | 18 Jan 2000 | 27 Nov 2001 | Holmboe Mfg. Co., Inc. | Waler clamp assembly for a concrete wall form |
| US6408082 | 30 Nov 1999 | 18 Jun 2002 | Digimarc Corporation | Watermark detection using a fourier mellin transform |
| US6424725 | 8 May 2000 | 23 Jul 2002 | Digimarc Corporation | Determining transformations of media signals with embedded code signals |
| US6430302 | 10 Jan 2001 | 6 Aug 2002 | Digimarc Corporation | Steganographically encoding a first image in accordance with a second image |
| US6438231 | 17 Aug 2000 | 20 Aug 2002 | Digimarc Corporation | Emulsion film media employing steganography |
| US6459803 | 11 Apr 2001 | 1 Oct 2002 | Digimarc Corporation | Method for encoding auxiliary data within a source signal |
| US6553129 | 28 Apr 2000 | 22 Apr 2003 | Digimarc Corporation | Computer system linked by using information in data objects |
| US6567533 | 27 Apr 2000 | 20 May 2003 | Digimarc Corporation | Method and apparatus for discerning image distortion by reference to encoded marker signals |
| US6580819 | 7 Apr 1999 | 17 Jun 2003 | Digimarc Corporation | Methods of producing security documents having digitally encoded data and documents employing same |
| US6625297 | 10 Feb 2000 | 23 Sep 2003 | Digimarc Corporation | Self-orienting watermarks |
| US6628801 | 12 Oct 1999 | 30 Sep 2003 | Digimarc Corporation | Image marking with pixel modification |
| US6694042 | 8 Apr 2002 | 17 Feb 2004 | Digimarc Corporation | Methods for determining contents of media |
| US6700990 | 29 Sep 1999 | 2 Mar 2004 | Digimarc Corporation | Digital watermark decoding method |
| US6721440 | 2 Jul 2001 | 13 Apr 2004 | Digimarc Corporation | Low visibility watermarks using an out-of-phase color |
| US6728390 | 7 Dec 2001 | 27 Apr 2004 | Digimarc Corporation | Methods and systems using multiple watermarks |
| US6744906 | 7 Dec 2001 | 1 Jun 2004 | Digimarc Corporation | Methods and systems using multiple watermarks |
| US6760463 | 17 Jan 2001 | 6 Jul 2004 | Digimarc Corporation | Watermarking methods and media |
| US6775392 | 6 Apr 2000 | 10 Aug 2004 | Digimarc Corporation | Computer system linked by using information in data objects |
| US6788800 | 25 Jul 2000 | 7 Sep 2004 | DigiMarc Corporation | Authenticating objects using embedded data |
| US6804376 | 28 Mar 2002 | 12 Oct 2004 | Digimarc Corporation | Equipment employing watermark-based authentication function |
| US6804377 | 2 Apr 2002 | 12 Oct 2004 | Digimarc Corporation | Detecting information hidden out-of-phase in color channels |
| US6823075 | 2 Feb 2001 | 23 Nov 2004 | Digimarc Corporation | Authentication watermarks for printed objects and related applications |
| US6829368 | 24 Jan 2001 | 7 Dec 2004 | Digimarc Corporation | Establishing and interacting with on-line media collections using identifiers in media signals |
| US6850626 | 28 Mar 2002 | 1 Feb 2005 | Digimarc Corporation | Methods employing multiple watermarks |
| US6917691 | 29 May 2003 | 12 Jul 2005 | Digimarc Corporation | Substituting information based on watermark-enable linking |
| US6917724 | 8 Apr 2002 | 12 Jul 2005 | Digimarc Corporation | Methods for opening file on computer via optical sensing |
| US6922480 | 29 Jul 2002 | 26 Jul 2005 | Digimarc Corporation | Methods for encoding security documents |
| US6959386 | 25 Jul 2001 | 25 Oct 2005 | Digimarc Corporation | Hiding encrypted messages in information carriers |
| US6965682 | 15 Feb 2000 | 15 Nov 2005 | | Data transmission by watermark proxy |
| US6968057 | 19 Mar 2002 | 22 Nov 2005 | DIGIMARC Corporation | Emulsion products and imagery employing steganography |
| US6993153 | 23 Sep 2003 | 31 Jan 2006 | Digimarc Corporation | Self-orienting watermarks |
| US7027614 | 12 Apr 2004 | 11 Apr 2006 | Digimarc Corporation | Hiding information to reduce or offset perceptible artifacts |
| US7054463 | 28 Mar 2002 | 30 May 2006 | Digimarc Corporation | Data encoding using frail watermarks |
| US7068811 | 27 Mar 2002 | 27 Jun 2006 | | Protecting images with image markings |
| US7362879 | 24 Apr 2007 | 22 Apr 2008 | Digimarc Corporation | Substituting objects based on steganographic encoding |
| US7412074 | 27 Sep 2006 | 12 Aug 2008 | Digimarc Corporation | Hiding codes in input data |
| US7593545 | 11 Aug 2008 | 22 Sep 2009 | Digimarc Corporation | Determining whether two or more creative works correspond |
| US7870703 | 6 Jan 2009 | 18 Jan 2011 | | Upper beam slab bolster for use in construction |
| US7978876 | 22 Sep 2009 | 12 Jul 2011 | Digimarc Corporation | Hiding codes in input data |
| USRE40919 | 27 Jan 2004 | 22 Sep 2009 | Digimarc Corporation | Methods for surveying dissemination of proprietary empirical data |
