公开(公告)号：US20020183224A1

公开(公告)日：2002-12-05

申请号：US10201705

申请日：2002-07-23

Applicant: Crown Technology, Inc.

Inventor： Joseph C. Peterson ,  Darren R. Bowman ,  Tucker D. Maurer

IPC: C11D001/00

CPC classification number: C23F11/10 ,  C11D3/3773 ,  C11D7/06 ,  C11D7/265 ,  C23G1/00

Abstract: A composition for adding to an aqueous rinse which is applied to a ferrous metal surface after treatment of the ferrous metal surface with an aqueous acid solution is disclosed. The composition includes a base. The base is present in the composition in an amount sufficient to adjust the pH of the aqueous rinse to a value greater than 7.0 after the composition is added to the aqueous rinse. The composition also includes a salt of gluconic acid. The composition further includes a polyquaternium compound. An associated method for inhibiting stain formation on a ferrous metal surface is also disclosed.

公开(公告)号：US20200253692A1

公开(公告)日：2020-08-13

申请号：US16865331

申请日：2020-05-02

Applicant: Advanced Crown Technology, Inc.

Inventor： Victor J. Hajjar

IPC: A61C5/77 ,  A61C9/00 ,  A61C5/30 ,  A61C13/00 ,  G16H10/60 ,  G16H40/20 ,  G05B19/4155

Abstract: The present invention is drawn to methods and means for easily, quickly and inexpensively producing one or more dental restorations—suited to each individual patient's needs, and having high quality and excellent fit—thereby reducing fit-issues and consequent rejections by patients. This is accomplished by a process which includes, scanning tooth/teeth of interest to create an “external prep” data file, preparing the tooth/teeth of interest for the dental restoration, scanning the prepared tooth/teeth of interest and saving this in an “internal prep” data file, volumetrically registering the “external scan” and the “internal scan” data files to each other in “digital space,” shaping both the inside and outside a generic dental restoration blank shell based on the “external prep” and “internal prep” data files to produce a patient-specific dental restoration, and then fastening the prepared dental restoration to the tooth/teeth of interest. This invention thereby provides the best possible outcomes, and an overall better patient experience.

公开(公告)号：US20040094236A1

公开(公告)日：2004-05-20

申请号：US10665597

申请日：2003-09-19

Applicant: Crown Technology, Inc.

Inventor： Tucker D. Maurer

IPC: C23C022/62

CPC classification number: C23C22/62 ,  C23C22/44

Abstract: Methods for passivating stainless steel after acid pickling treatment in the absence of nitric acid are provided. The methods include the steps of cleaning the pickled stainless steel with an alkaline composition to obtain clean steel, activating the clean steel with an activator composition to obtain activated steel, and passivating the activated steel with a passivating composition in the absence of nitric acid. In the preferred embodiment, the activator composition contains at least one activator, the activator having a significantly higher binding affinity for iron than for chromium as evidenced by their metal complex formation constants.

Abstract translation: 提供了在没有硝酸的酸洗处理后钝化不锈钢的方法。 所述方法包括用碱性组合物清洗腌制的不锈钢以获得清洁的钢，用活化剂组合物活化清洁钢以获得活化的钢，以及在不存在硝酸的情况下用钝化组合物钝化活化钢的步骤。 在优选的实施方案中，活化剂组合物含有至少一种活化剂，所述活化剂对于铁的结合亲和力比对铬的结合亲和力高，如其金属络合物形成常数所证明的。