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Official data from INPI

PROCESSO PARA PREPARACAO DE UM TERPOLIMERO,PROCESSO PARA PREPARACAO DE UM COPOLIMERO,E PROCESSO PARA PREVENCAO DE FORMACAO DE ESCAMAS QUANDO SE AQUECE OU SE DESSALINIZA AGUA

Em AnáliseInvention Patent

Application data

Number

PI7801765

Type

Invention Patent

Filing

03/23/1977

Publication

-

Progress at the INPI

  1. Filing03/23/77
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant
  6. Terminated06/29/93

The patent was granted and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/08/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PFIZER

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

21.5

07/06/1993

RPI 1179

Carta-patente expirada

#21.1

06/29/1993

RPI 1178

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