# SULPHCO INC

SULPHCO INC is a company headquartered in Houston,, TX, United States.

## Company overview

- **Legal name:** SULPHCO INC
- **Former names in filing history:** FILMWORLD INC (1999-10-08 to 2001-02-14)
- **Classification:** Company
- **Industry (SIC):** 1389 — Oil & Gas Field Services, NEC
- **Headquarters:** Houston,, TX, United States
- **Incorporated in:** NV
- **Fiscal year end:** December 31
- **SEC CIK:** 0001096560

## About

SULPHCO INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0001096560, and its reported industry is Oil & Gas Field Services, NEC. The retained history contains 12 filings, including 8-K filed on 2011-09-16. Each filing retains its accession, filing date and original SEC document link. This historical evidence does not establish current registration, listing, ownership or financial condition.

## Recent SEC filings

- Form 8-K — filed 2011-09-16 — period 2011-09-16
- Form 10-Q — filed 2011-08-12 — period 2011-06-30 — FORM 10-Q
- Form 8-K — filed 2011-06-21 — period 2011-06-20
- Form 8-K — filed 2011-06-14 — period 2011-06-14
- Form 8-K — filed 2011-06-07 — period 2011-06-07
- Form 10-Q — filed 2011-05-13 — period 2011-03-31
- Form 10-K/A — filed 2011-04-28 — period 2010-12-31
- Form 8-K — filed 2011-04-18 — period 2011-04-15
- Form 10-K — filed 2011-03-31 — period 2010-12-31
- Form SC 13G — filed 2011-03-02 — SCHEDULE 13G
- Form 8-K — filed 2011-02-07 — period 2011-02-01
- Form 8-K — filed 2010-12-20 — period 2010-12-14

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Updated: 2026-10-23T22:38:43Z

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