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Official data from INPI

BROCA HELICOIDAL

Em AnáliseInvention PatentPCT · US1989001049

Application data

Number

PI8907316

Type

Invention Patent

Filing

03/14/1989

Publication

03/19/1991

PCT

US1989001049

Progress at the INPI

  1. Filing03/14/89
  2. Publication03/19/91
  3. Examination11/05/91
  4. Allowance03/09/93
  5. Grant08/31/93
  6. Terminated12/31/96

The patent was granted on 08/31/1993 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/31/1996. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Greenfield Industries, Inc.

US

Inventors

G. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

186.074 · 03/14/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/29/1993

RPI 1178

Deferimento

#9.1

03/09/1993

RPI 1162

Solicitação de exame técnico

#4.1

11/05/1991

RPI 1092

Notificação de entrada na fase nacional - PCT

#1.3

03/19/1991

RPI 1059

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