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Official data from INPI

PROCESSO PARA ELIMINAR SUBSTANCIALMENTE O ACUMULO DE POLIMEROS NAS SUPERFICIES INTERNAS DE UM VASO DE REACAO DE POLIMERIZACAO E VASO DE REACAO DE POLIMERIZACAO

ConcedidaInvention Patent

Application data

Number

PI7908871

Type

Invention Patent

Filing

10/23/1978

Publication

-

Progress at the INPI

  1. Filing10/23/78
  2. Publication
  3. Examination06/08/82
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired05/09/95

The letters patent expired on 05/09/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOODRICH CO B F

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Inventors

C. L. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Republicação - classificação IPC

#15.11

04/16/1985

RPI 756

Deferimento

#9.1

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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