Method for Generating High Contrast Images of Semiconductor Sites Via One-Photon Optical Beam-Induced Current Imaging and Confocal Reflectance Microscopy
Inventors: Ceasar S. Saloma, Vincent Daria, Jelda Jane Miranda
Philippine Patent granted on November 23, 2007.
Date of Filing: January 7, 2005
Patent No.: 1-2005-50056
US Patent granted on June 26, 2007
Date of Filing: July 9, 2002
Patent No.: 7235988
Dr. Saloma and his team developed a microscopic imaging technique that effectively discriminates between semiconductor and metal materials in an integrated circuit. This was done by utilizing one-photon optical beam-induced current (1P-OBIC) and confocal reflectance images, which are both generated using the same excitation laser beam. Compared to the two-photon optical beam-induced current imaging that also generates high-contrast images of semiconductor sites, the hardware support for this 1P-OBIC procedure is significantly cheaper. Using this principle in a combined OBIC and confocal microscope system allows for effective visualization of semiconductor integrated circuits, which is useful for failure analysis and other applications.
Applications: semiconductor industry, academic research institutes
Seaweed-Based Air Freshener Gel
Inventors: Marco Nemesio E. Montaño, Banaag Glorioso-Lajera
Utility Model Patent Certificate issued on March 9, 2007.
Date of Filing: January 30, 1996
Patent No.: 21996015501
Dr. Montaño and his team developed a seaweed-based air freshener with a characteristic gel-like texture. The low-cost air freshener makes use of the whole seaweed instead of the extracted polysaccharide leading to lower production cost. The base allows a slow release of the essence thus prolonging its shelf life. Unlike the fresheners commercially available, the seaweed-based air freshener can be divided into shapes and sizes for easier packing and utilization.
Applications: deodorant manufacturing, home care sector, environmental health care
Time Keeping Device
Inventors: Prof. Michael Angelo Pedrasa, Prof. Jhoanne Rhodette A. Ibabao, Prof. Joy Alinda P. Reyes, Prof. Emerson C. Tan
Utility Model Registration Certificate issued on December 11, 2006.
Date of Filing: May 8, 2003
Registration No.: 2-2003-000176
This system integrates a barcode reader, fingerprint sensor and Transmission Control Protocol/Internet Protocol (TCP/IP) connectivity, allowing for remote employee log-in over a WAN/LAN and user verification through off-line fingerprint matching. This system enables unlimited number of terminals to connect to a single centralized server, eliminating the need for dedicated personal computers to be connected to each terminal. This utility model addresses the issue of user verification by collecting log-in information containing barcode data and fingerprint image for biometric identification.
Applications: industry personnel log-in information, employee attendance verification, personnel biometric identification
Titanium Nitride Thin Film Formation on Metal Substrate by Chemical Vapor Deposition in a Magnetized Sheet Plasma Source
Inventor: Henry J. Ramos
Taiwan Patent granted on July 21, 2007.
Date of Filing: October 28, 2002
Patent No.: R.O.C. Invention Patent No. I284361
US Patent granted on October 21, 2008.
Date of Filing: February 27, 2002
Patent No.: 7438955
Through the advanced technology developed by Dr. Ramos and his research team, it is now possible to enhance the lifetime of tools through coating. A magnetized sheet plasma source provides a wear-resistant titanium nitride (TiN) tool coating at less than a quarter of the cost of carbide coating and similar techniques. The coating process is superior to other techniques because it is relatively fast and does not require very high temperatures that could damage the material being coated.
Applications: cutting tools manufacturing industry, aerospace components, automotive parts, broaches, decorative accessories, dental instruments, door hardware, eyeglass frames, firearms components, food processing equipment, hobs, jewelry, marine hardware, medical devices, pharmaceutical equipment, plastic molds, plumbing fixtures, precision gears, sporting goods, surgical implants and writing instruments
Two Color (Two Photon) Excitation with Focused Excitation Beams and a Raman Shifter
Inventors: Ceasar A. Saloma, Wilson O. Garcia, Jonathan Palero
Philippine Patent granted on July 15, 2008.
Date of Filing: March 22, 2004
Patent No.: 1-2005-500584
Dr. Saloma and his team have invented a method for inducing highly localized light absorption in materials via two-color (two-photon) excitation (2CE). Compared to conventional methods, including two-photon single color excitation, two-color fluorescence excitation results in a higher spatial resolution. Furthermore, it is robust against effects of two-beam interference and breakdowns in confocality of the focused excitation beams. This technique can be applied to two-color fluorescence microscopy of optically thick and irregularly shaped biological samples.
Optical beam-induced current imaging is a failure analysis technique for determining the presence of defects and discontinuities in an integrated circuit. The advantages of two-color excitation can be extended to it for the enhancement of resolution and image contrast. This technology is a key component of a practical 2CE microscope.
Applications: biomedical imaging, failure analysis in semiconductor industry
