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Official data from INPI

APARELHO E PROCESSO PARA A DESLIGNIFICAÇÃO, POR OXIGÊNIO, CONTINUA DE POLPA

Em AnáliseInvention Patent

Application data

Number

PI8201939

Type

Invention Patent

Filing

04/05/1982

Publication

03/08/1983

Progress at the INPI

Technical opinion to answer
  1. Filing04/05/82
  2. Publication03/08/83
  3. Examination04/09/85
  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: 10/20/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Air Products And Chemicals INC

US

The Black Clawson Company

US

See this company's full portfolio

Inventors

E. E. (pessoa física)

US

L. M. (pessoa física)

US

V. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

251,401 · 04/06/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

10/20/1987

RPI 887

Conhecimento de parecer técnico

#7.1

10/08/1985

RPI 781

Solicitação de exame técnico

#4.1

04/09/1985

RPI 755

Publicação do pedido de patente

#3.1

03/08/1983

RPI 646

Pedido de patente depositado

#2.1

05/25/1982

RPI 605

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