PATENT CLAIM ANALYSIS

Application Number: 15966192
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["360", "125040"]

Abstract:
Dual and triple PMR writers are disclosed wherein the number of writer pads required to energize the selected PMR writer is minimized to three or four, respectively, with a coil configuration wherein separate top coils are connected by separate interconnects or side taps to separate bottom coils. Either top coils or bottom coils may be linked to a common W− pad. Alternatively, there may be one bottom coil that allows all output current to flow to a common W− pad. Coils may have a pancake or helical shape. In dual PMR writer embodiments, there may be one or two dynamic fly height heater coils. Magnetic performance in the selected writer of a dual PMR writer is similar to that of a single PMR writer with regard to erase width in AC mode (EWAC), Hy field, trailing and side shield return fields, down-track and cross-track gradient.

Claim (Index 1):
A multiple perpendicular magnetic recording (PMR) writer, comprising:\n (a) a first main pole layer (MP 1 ) in a first PMR writer formed on a slider, wherein the first PMR writer is configured for writing on a magnetic recording medium by passing a first current (Iw 1 ) through a first circuit comprised of a first top coil, a first bottom coil, and a first interconnect that connects the first top and bottom coils thereby energizing MP 1 ; (b) a second main pole layer (MP 2 ) in a second PMR writer on the slider and wherein a center of MP 2  is separated from a center of MP 1  by a cross-track writer-writer spacing (WWS), and wherein the second PMR writer is configured for writing on the magnetic medium by passing a second current (Iw 2 ) through a second circuit comprised of a second top coil, a second bottom coil, and a second interconnect that connects the second top and bottom coils thereby energizing MP 2 ; (c) a first writer pad W1+ configured to input Iw 1  into the first circuit; and (d) a second writer pad W2+ configured to input Iw 2  into the second circuit, and wherein one of the first and second PMR writers is determined to have a better performance while the other of the first and second PMR writers is disabled and not used for writing to a magnetic medium.

Metadata:
- Claim Count in Document: 107.0
- Percentile: 91.0
- Lexical Diversity: 1.79775
- Patent Class: 360.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15913167', '15942640', '15874986', '15942756', '15685227']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7880741467481098
- 35 USC 102 Novelty (BERT): 0.5745795141000672
- Combined Prediction Score: 0.7667246834833056
- Mean Citation Score: 474.74673600000006
- Max Citation Score: 504.18692
- Similarity Product: 389.4493744384813

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test