| C | Corporation | 5/29/1947 | | 5/29/1947 | Foreign | Profit | | 9/29/1983 | Name Change (Reserved for old records) |
| 9/29/1983 | CHANGE OF NAME DIAMOND SHAMROCK CORPORATION TO DIAMOND CHEMICAL COMPANY. |
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| 5/6/1983 | CERTIFICATE OF DESIGNATION |
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| 5/28/1982 | AMENDMEND: RESTATED CERTIFICATE OF AUTHORITY |
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| 4/7/1978 | AMENDMENT: RESTATED CERTIFICATE OF AUTHORITY ROLL 130.
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| 4/7/1978 | AMENDMENT: CERTIFICATE OF DECREASE OF AUTHORIZED NUMBER OF SHARES; ROLL 130 |
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| 8/1/1977 | AMENDMENT: RESTATED CERTIFICATE OF AUTHORITY ROLL 122 |
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| 8/1/1977 | AMENDMENT: DECREASE OF AUTHORIZED NUMBER OF SHARES; ROLL 122
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| 1/24/1977 | AMENDMENT: RESTATED CERTIFICATE OF AUTHORITY ROLL 115. |
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| 6/7/1976 | AMENDMENT: RESTATED CERTIFICATE OF AUTHORITY ROLL 108. |
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| 7/30/1973 | AMENDMENT: RESTATED CERTIFICATE OF AUTHORITY ROLL 73. |
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| 6/17/1969 | AMENDMENT: CERTIFICATE OF AUTHORITY ROLL 48. |
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| 2/7/1969 | AMENDMENT: CERTIFICATE OF AUTHORITY ROLL 20. |
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| 1/23/1968 | MERGER; MERGING THE SHAMROCK OIL AND GAS CORP., A QUALIFIED DE CORPORATION WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR, WHICH CHANGED ITS NAME TO DIAMOND SHAMROCK CORPORATION. ROLL 7 |
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| 9/19/1967 | MERGER; MERGING CLARK FOAM PRODUCTS CO., INC., AN IL CORPORATION, CLARK PRODUCTS, INC., AN IN CORPORATION, CLARK PRODUCTS, INC., A MN CORPORATION, CLARK PRODUCTS, INC., A NE CORPORATION, NOPCO CHEMICAL COMPANY, A PA CORPORATION WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR. ROLL 3 |
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| 7/17/1967 | MERGER; MERGING SUPERIOR ZINC COMPANY, A NON-QUALIFIED DE CORPORATION WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR; ROLL 1. |
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| 5/22/1967 | MERGER; MERGING NOPCO CHEMICAL COMPANY, A NJ CORPORATION WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR: BOOK 254, PAGE 371. |
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| 10/5/1965 | AMENDMENT: CERTIFICATE OF DESIGNATION FO $4.00 PREFERRED STOCK, SERIES B; BOOK 245, PAGE 214. |
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| 10/13/1964 | MERGER; MERGING HERTIAGE HOUSE PRODUCTS, INC., A DE CORPORATION WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR; BOOK 242, PAGE 84. |
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| 5/14/1962 | AMENDMENT: CERTIFICATE OF AUTHORITY BOOK 210, PAGE 334. |
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| 10/28/1961 | MERGER; MERGING THE BESSEMER LIMESTONE AND CEMENT CO. WITH AND INTO DIAMOND ALKALI COMPANY, THE SURVIVOR; BOOK 233, PAGE 677 |
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| 10/27/1961 | AMENDMENT: CERTIFICATE OF DESIGNATION OF $4.00 PREFERRED STOCK; BOOK 233, PAGE 676.
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| 10/27/1961 | AMENDMENT: CERTIFICATE OF AUTHORITY. BOOK 210, PAGE 315 |
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| 6/17/1957 | AMENDMENT: CERTIFICATE OF AUTHORITY BOOK 210, PAGE 176. |
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| 12/27/1951 | AMENDMENT: CERTIFICATE OF DESIGNATION OF OTHER SPECIAL RIGHTS OF THE 4.40% CUMULATIVE PREFERRED STOCK; BOOK 183, PAGE 629 |
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| 11/23/1951 | AMENDMENT: CERTRIFICATE OF AUTHORITY BOOK 183, PAGE 617. |