KNOXBRAIN PRODUCED BY KNOX TRANSPORT INC” KNOXBRAIN is a stationery brand by KNOX, specializing in system notebooks and pen cases. The parent company, KNOX, also produces leather goods such as bags and wallets. Rare Discontinued System Notebook Black Leather Genuine Leather with Pen Holder 6-Hole While the notebook itself is perfectly usable, the card case shows some stickiness due to aging.