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Official data from INPI

PROCESSO QUE PERMITE REVESTIR DE POLITETRAFLUOROETILENO AS PARADES INTERNAS E UM CORPO OCO METALICO CUJAS PAREDES INTERNAS SAO REVESTIMENTO DE POLITETRAFLUROETILENO

ConcedidaInvention Patent

Application data

Number

PI8103582

Type

Invention Patent

Filing

06/06/1980

Publication

03/02/1982

Progress at the INPI

  1. Filing06/06/80
  2. Publication03/02/82
  3. Examination05/18/82
  4. Allowance09/18/84
  5. Grant04/30/85
  6. Terminated06/27/95

The patent was granted on 04/30/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. K. (pessoa física)

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Inventors

T. C. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

01/15/1985

RPI 743

Deferimento

#9.1

09/18/1984

RPI 726

Exigência - art. 36 da LPI

#6.1

10/18/1983

RPI 678

Solicitação de exame técnico

#4.1

05/18/1982

RPI 604

Publicação do pedido de patente

#3.1

03/02/1982

RPI 593

Anuidade - prazo legal encerrado

#18.2

06/27/1995

RPI 1282

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