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Official data from INPI

processo para produzir um revestimento de conversão de fosfato de ferro sobre superfície metálicas e processo para produzir um revestimento de fosfato de ferro sobre superfície de metal ferroso.

Em AnáliseInvention Patent

Application data

Number

PI7808565

Type

Invention Patent

Filing

12/28/1978

Publication

-

Progress at the INPI

Technical opinion to answer
  1. Filing12/28/78
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. In force

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 04/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amchem Products Inc.,

US

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Inventors

No inventors listed.

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

04/22/1987

RPI 861

Conhecimento de parecer técnico

#7.1

08/31/1982

RPI 619

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C23F 7/10.

03/27/2018

RPI 2464

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