Accurate Measurement of Silicon Dopants Dopants are elements, such as boron and phosphorus, that must be precisely inserted into the silicon lattice to achieve desired device characteristics. Our fourier transform infrared spectrometers, or FTIRs, enable silicon semiconductor device and wafer manufacturers to measure the amount of dopants in the silicon lattice and the thickness of differently-doped silicon layers used to form transistors

EX-4.1 2 v97043a1exv4w1.txt EXHIBIT 4.1 Exhibit 4.1 [CERTIFICATE OF STOCK] COMMON STOCK COMMON STOCK NUMBER SHARES AXNT ACCENT INCORPORATED UNDER THE LAWS SEE REVERSE FOR OF THE STATE OF DELAWARE CERTAIN DEFINITIONS CUSIP 00430N 10 9 This Certifies that ACCENT is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $0.00001 PAR VALUE, OF =============================ACCENT OPTICAL TECHNOLOGIES, INC.================== transferable only on the books of the Corporation by the holder hereof in person, or by duly authorized attorney, upon the surrender of this certificate properly endorsed. This certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. In Witness Whereof, the Corporation has caused the facsimile signatures of its duly authorized officers and its seal to be hereunto affixed. COUNTERSIGNED AND REGISTERED MELLON INVESTOR SERVICES LLC TRANSFER AGENT AND REGISTRAR BY AUTHORIZED SIGNATURE Date: /s/ Reid Langrill /s/ Bruce C. Rhine ASSISTANT SECRETARY PRESIDENT ACCENT OPTICAL TECHNOLOGIES INC. DELAWARE CORPORATE SEAL (C) NORTHERN BANK NOTE COMPANY ACCENT OPTICAL TECHNOLOGIES, INC. The Corporation will furnish to any stockholder upon request and without charge a full statement of the designations, preferences, limitations and relative rights of the shares of each class of shares authorized to be issued and the variations in the relative rights and preferences between the shares of each series of a class of shares so far as the same have been fixed and determined and the authority of the board of directors to fix and determine the relative rights and preferences of the subsequent series. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM- as tenants in common TEN ENT- as tenants by the entireties JT TEN- as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT-_____________ Custodian ____________ (Cust) (Minor) under Uniform Gifts to Minors Act _______________________________ (State) UNIF TRF MIN ACT- _____________ Custodian (until age ____) (Cust) ___________________ under Uniform Transfers (Minor) to Minors Act _________________________ (State) Additional abbreviations may also be used though not in the above list. For Value Received, _________________________________________________ hereby sell, assign and transfer unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE - ------------------------------------ - ------------------------------------ ________________________________________________________________________________ (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) ________________________________________________________________________________ ________________________________________________________________________________ _____________________________________________________________________ Shares of the common stock represented by the within Certificate, and do hereby irrevocably constitute and appoint _____________________________________________________________________ Attorney to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises. Dated__________________ ________________________________________________________________________________ NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER. Signature(s) Guaranteed: By - -------------------------------------------------------------------------------- THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.